Preliminary Pricing Supplement

The Callable STRIDES:

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The Callable STRIDES are designed for investors seeking interest payments on their investment and who want to participate in the change in the price of Best Buy Co., Inc. common stock over the term of the Callable STRIDES, subject to ML&Co.’s right to call the Callable STRIDES.

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We may call the Callable STRIDES beginning March , 2008 through and including March , 2009.

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We will pay interest on the $25 original public offering price per unit of the Callable STRIDES quarterly, at the rate of 9% per year, beginning June , 2007.

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The initial share multiplier for the Callable STRIDES will be based upon the volume weighted average price of one share of Best Buy Co., Inc. common stock on the date the Callable STRIDES are priced for initial sale to the public. The initial share multiplier will be set so that the product of the volume weighted average price of one share of Best Buy Co., Inc. common stock on the date the Callable STRIDES are priced for initial sale to the public and the initial share multiplier equals $25, the original public offering price of one unit of the Callable STRIDES. The share multiplier will be subject to adjustment for certain corporate events relating to Best Buy Co., Inc. as described in this pricing supplement.

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If the closing market price of Best Buy Co., Inc. common stock falls below $1.00, the Callable STRIDES will be redeemed prior to their stated maturity date. If redeemed, we will deliver for each Callable STRIDES a number of shares of Best Buy Co., Inc. common stock equal to the then current share multiplier, plus a redemption amount as described in this pricing supplement.

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We have applied to have the Callable STRIDES listed on the American Stock Exchange under the trading symbol “BLB”. If approval of this application is granted, the Callable STRIDES will be listed on the American Stock Exchange at the time of such approval. We make no representations, however, that the Callable STRIDES will be listed or, if listed, will remain listed for the entire term of the Callable STRIDES. In addition, if less than 1,000,000 units of the Callable STRIDES are sold, they will not be listed on the American Stock Exchange.

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The Callable STRIDES will be senior unsecured debt securities of Merrill Lynch & Co., Inc. and part of a series entitled “Medium-Term Notes, Series C.” The Callable STRIDES will have the CUSIP No.: .

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The Callable STRIDES are linked to the price of Best Buy Co., Inc. common stock (trading symbol “BBY”). Best Buy Co., Inc. has not authorized or approved the Callable STRIDES in any way and has no financial or legal obligation with respect to the Callable STRIDES.

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The settlement date for the Callable STRIDES is expected to be March , 2007.

Payment on the maturity date:

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If the Callable STRIDES have not been redeemed or we have not called the Callable STRIDES prior to or on the stated maturity date, for each Callable STRIDES you own on the maturity date, in addition to accrued and unpaid interest, we will deliver to you a number of shares of Best Buy Co., Inc. common stock equal to the then current share multiplier.

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On the maturity date, if the price of Best Buy Co., Inc. common stock has decreased, the value of Best Buy Co., Inc. common stock that you will receive will be less than the $25 original public offering price per unit of your Callable STRIDES.

Payment if called by Merrill Lynch & Co., Inc.:

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If we call the Callable STRIDES on or after March , 2008, we will pay you a cash amount that, together with all other payments made on the Callable STRIDES from the original issue date to and including the call date, will provide a yield to call of between 9% and 11% per year on the original public offering price per unit of the Callable STRIDES from the original issue date until the call date. The actual yield to call will be determined on the date the Callable STRIDES are priced for initial sale to the public and will be set forth in the final pricing supplement made available in connection with sales of the Callable STRIDES.

Information included in this pricing supplement supersedes information in the accompanying MTN prospectus supplement, general prospectus supplement and prospectus to the extent that it is different from that information.

Investing in the Callable STRIDES involves risks that are described in the “Risk Factors” section beginning on page PS-8 of this pricing supplement and beginning on page S-3 of the accompanying MTN prospectus supplement.

The public offering price and the underwriting discount for any single transaction to purchase 100,000 units or more will be $24.625 per unit and $.125 per unit, respectively.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this pricing supplement or the accompanying MTN prospectus supplement, general prospectus supplement and prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

“STock Return Income DEbt Securities” and “STRIDES” are service marks of Merrill Lynch & Co., Inc.

This summary includes questions and answers that highlight selected information from this pricing supplement and the accompanying MTN prospectus supplement, general prospectus supplement and prospectus to help you understand the Callable STock Return Income DEbt Securities^SM due March , 2009 (the “Callable STRIDES^SM”) payable on the maturity date with Best Buy Co., Inc. (the “Underlying Company”) common stock (the “Deliverable Shares”). You should carefully read this pricing supplement and the accompanying MTN prospectus supplement, general prospectus supplement and prospectus to fully understand the terms of the Callable STRIDES and the tax and other considerations that are important to you in making a decision about whether to invest in the Callable STRIDES. You should carefully review the “Risk Factors” sections of this pricing supplement and the accompanying MTN prospectus supplement, which highlight certain risks associated with an investment in the Callable STRIDES, to determine whether an investment in the Callable STRIDES is appropriate for you.

References in this pricing supplement to “ML&Co.”, “we”, “us” and “our” are to Merrill Lynch & Co., Inc., and references to “MLPF&S” are to Merrill Lynch, Pierce, Fenner & Smith Incorporated.

The Callable STRIDES will be a series of senior debt securities issued by ML&Co. entitled “Medium-Term Notes, Series C” and will not be secured by collateral. The Callable STRIDES will rank equally with all of our other unsecured and unsubordinated debt. The Callable STRIDES are expected to mature in March 2009. Depending on the date the Callable STRIDES are priced for initial sale to the public (the “Pricing Date”), which is expected to occur in February or March, the settlement date may occur in April instead of March and the maturity date may occur in April instead of March. Any reference in this pricing supplement to the month in which the settlement date or maturity date will occur is subject to change as specified above, unless redeemed or called by us, as described in this pricing supplement.

Each unit will represent a single Callable STRIDES with a $25 original public offering price per unit. You may transfer the Callable STRIDES only in whole units. You will not have the right to receive physical certificates evidencing your ownership except under limited circumstances. Instead, we will issue the Callable STRIDES in the form of a global certificate, which will be held by The Depository Trust Company, also known as DTC, or its nominee. Direct and indirect participants in DTC will record your ownership of the Callable STRIDES. You should refer to the section entitled “Description of the Debt Securities—Depositary” in the accompanying general prospectus supplement.

Yes, an investment in the Callable STRIDES is subject to risks, including the risk of loss. Please refer to the sections entitled “Risk Factors” in this pricing supplement and the accompanying MTN prospectus supplement.

The Underlying Company has disclosed that it is a specialty retailer of consumer electronics, home-office products, entertainment software, appliances and related services, both through retail stores and commercial Web sites. You should independently investigate the Underlying Company and decide whether an investment in the Callable STRIDES linked to the Deliverable Shares is appropriate for you.

Because the Deliverable Shares are registered under the Securities Exchange Act of 1934, the Underlying Company is required to file periodically certain financial and other information specified by the SEC. Information provided to or filed with the SEC by the Underlying Company can be located by reference to SEC file number 001-09595 and inspected at the SEC’s public reference facilities or accessed over the Internet through the SEC’s web site. In addition, information regarding the Underlying Company may be obtained from other sources including, but not limited to, press releases, newspaper articles and other publicly disseminated information. We make no representation or warranty

as to the accuracy or completeness of that information. For further information, please see the sections entitled “The Deliverable Shares—The Underlying Company” and “Where You Can Find More Information” in this pricing supplement and the accompanying general prospectus supplement and prospectus.

The Underlying Company has not authorized or approved the Callable STRIDES and has no financial or legal obligations relating to the Callable STRIDES or to amounts to be paid to you, including any obligation to take the needs of ML&Co. or of holders of the Callable STRIDES into consideration for any reason. The Underlying Company will not receive any of the proceeds of the offering of the Callable STRIDES and is not responsible for, and has not participated in, the offering of the Callable STRIDES and is not responsible for, and will not participate in, the determination or calculation of the amount receivable by holders of the Callable STRIDES. ML&Co. is not affiliated with the Underlying Company.

You can find a table with the high and low closing prices per share of the Deliverable Shares during each quarter from the first quarter of 2002 to the present in the section entitled “The Deliverable Shares—Historical Data” in this pricing supplement.

We have provided this information to help you evaluate the behavior of the Deliverable Shares in various economic environments; however, this information is not necessarily indicative of how the Deliverable Shares will perform in the future.

On the maturity date, if we have not previously redeemed or called the Callable STRIDES, for each unit of the Callable STRIDES that you own, in addition to accrued and unpaid interest, we will deliver to you a number of Deliverable Shares equal to the then current share multiplier. The initial “Share Multiplier” will be determined on the date the Callable STRIDES are priced for initial sale to the public (the “Pricing Date”) so that the product of the volume weighted average price of the Deliverable Shares on the Pricing Date and the initial Share Multiplier equals $25, the original public offering price of one unit of the Callable STRIDES. The initial Share Multiplier will be set forth in the final pricing supplement made available in connection with sales of the Callable STRIDES. The Share Multiplier will be subject to adjustment to account for certain corporate events relating to the Underlying Company as described in this pricing supplement. If February 14, 2007 was the Pricing Date for the Callable STRIDES, based upon the volume weighted average price of one Deliverable Share of $50.11, the Share Multiplier would equal 0.49885861.

We will not distribute fractional Deliverable Shares. Instead, the number of Deliverable Shares to be delivered on the maturity date will be aggregated and the value of the fractional share will be paid in cash. Please see the section entitled “Description of the Callable STRIDES—Fractional Shares” in this pricing supplement.

For more specific information regarding the corporate events referred to above, please see the section entitled “Description of the Callable STRIDES—Share Multiplier Adjustment” and “—Reorganization Events” in this pricing supplement.

The opportunity to participate in possible increases in the price of the Deliverable Shares through an investment in the Callable STRIDES is limited because if we call the Callable STRIDES the total yield on your investment will never exceed an amount between 9% and 11% per year. However, in the event that the price of the Deliverable Shares declines over the term of the Callable STRIDES, you will realize the entire decline in the value of the Callable STRIDES and may lose a part or all of your initial investment. For more information about risks associated with the Callable STRIDES, please see the section entitled “Risk Factors” in this pricing supplement and the accompanying MTN prospectus supplement.

Interest on the Callable STRIDES will accrue at the rate of 9% per year on the $25 original public offering price per unit from and including March ,

2007 or from the most recent interest payment date for which interest has been paid or provided for to but excluding the maturity date, redemption date or the date we call the Callable STRIDES. Unless earlier redeemed or called, you will receive quarterly interest payments on March , June , September , and December , of each year, beginning on June , 2007 and on the maturity date. If any interest payment date is not a Business Day, you will receive payment of any accrued and unpaid interest on the following Business Day with no additional interest as a result of the delay.

We may call the Callable STRIDES on any scheduled Business Day beginning on March , 2008, through and including the maturity date (the day on which the call occurs, if any, being the “Call Date”) by giving notice to the trustee of the Callable STRIDES at least five Business Days prior to the Call Date as described in this pricing supplement and specifying the Call Date, Call Price (as described below) and amount of accrued and unpaid interest payable on the Call Date. The Call Price will be determined based upon the applicable Call Date. The Call Price will equal $ if we call the Callable STRIDES on March , 2008, the first date the Callable STRIDES may be called, and $ if we call the Callable STRIDES on March , 2009, the last date the Callable STRIDES may be called. For a list of hypothetical month-end, midmonth, first and last Call Prices from February 20, 2008 (the hypothetical first Call Date) through the hypothetical stated maturity date, please see the section entitled “Description of the Callable STRIDES—Hypothetical Call Prices” in this pricing supplement; and for an example of the Call Price calculation, please see Annex A to this pricing supplement. If we elect to exercise our call option, the Call Price will be disclosed to DTC, or its nominee, while the Callable STRIDES are held by DTC as depositary. So long as DTC, or its nominee, is the registered holder of the Callable STRIDES, notice of our election to exercise the call option will be forwarded as described in the section entitled “Description of Debt Securities—Depositary” in the accompanying general prospectus supplement. The Call Price does not include the amount of unpaid interest accrued to but excluding the Call Date; however, on the Call Date you will receive an amount equal to the Call Price plus any accrued and unpaid interest to but excluding the Call Date (the “Final Amount”).

The “Call Price” on any Call Date is the amount of cash, per Callable STRIDES, that when discounted from the Call Date to the original issue date by a discount factor based on an annual yield to call of between 9% and 11% and when added to the present value of all interest payments made through and including the applicable Call Date discounted to the original issue date by that same discount factor, will equal the original public offering price. The actual yield to call will be determined on the Pricing Date and will be set forth in the final pricing supplement made available in connection with sales of the Callable STRIDES. The yield to call represents the annual interest rate used in determining the present values, discounted to the original issue date, of all payments made or to be made on the Callable STRIDES, including the Call Price and all interest payments, such that the sum of these present values is equal to the original public offering price. The present values of the interest payments made on the Callable STRIDES will be calculated assuming each payment is made on the calendar day scheduled for that payment, without regard to whether that day is a Business Day.

If we call the Callable STRIDES, you will receive the Call Price in cash. Please see the section entitled “Description of the Callable STRIDES—Call at the Option of ML&Co.” in this pricing supplement.

Also, we will not distribute fractional Deliverable Shares. If the number of Deliverable Shares to be delivered on the maturity date is not divisible by a whole number, we will aggregate all share amounts due on the maturity date, and in lieu of delivering a fractional Deliverable Share, we will pay the cash value of the fractional share as more fully described in the section entitled “Description of the Callable STRIDES—Fractional Shares” in this pricing supplement.

The United States federal income tax consequences of an investment in the Callable STRIDES are complex and uncertain. By purchasing a Callable STRIDES, you and ML&Co. agree, in the absence of an administrative determination, judicial ruling or other authoritative guidance to the contrary, to characterize and treat a Callable STRIDES for all tax purposes as an investment unit consisting of a debt instrument of ML&Co. and a forward contract to acquire the Deliverable Shares (subject to early cancellation). Under this characterization and treatment of the Callable STRIDES, for United States federal income tax purposes, you will generally include payments of interest on the Callable STRIDES as income in accordance with your regular method of tax accounting. You should review the discussion under the section entitled “United States Federal Income Taxation” in this pricing supplement.

We have applied to have the Callable STRIDES listed on the American Stock Exchange (“AMEX”) under the trading symbol “BLB”. If approval of this application is granted, the Callable STRIDES will be listed on the AMEX at the time of such approval. We make no representation however, that the Callable STRIDES will be listed on AMEX or, if listed, will remain listed for the entire term of the Callable STRIDES. In addition, if less than 1,000,000 units of the Callable STRIDES are sold, they will not be listed on the American Stock Exchange. In any event, you should be aware that the listing of the Callable STRIDES on AMEX will not necessarily ensure that a liquid trading market will be available for the Callable STRIDES. You should review the section entitled “Risk Factors—There may be an uncertain trading market for the Callable STRIDES and the market price you may receive or be quoted for your Callable STRIDES on a date prior to the stated maturity date will be affected by this and other important factors, including our costs of developing, hedging and distributing the Callable STRIDES” in this pricing supplement.

What price can I expect to receive if I sell the Callable STRIDES prior to the stated maturity date?

In determining the economic terms of the Callable STRIDES, and consequently the potential return on the Callable STRIDES to you, a number of factors are taken into account. Among these factors are certain costs associated with creating, hedging and offering the Callable STRIDES. In structuring the economic terms of the Callable STRIDES, we seek to provide investors with what we believe to be commercially reasonable terms and to provide MLPF&S with compensation for its services in developing the Callable STRIDES.

If you sell your Callable STRIDES prior to the stated maturity date, you will receive a price determined by market conditions for the Callable STRIDES. This price may be influenced by many factors, such as interest rates, volatility and the prevailing price of the Deliverable Shares, and the expectations of the amount, if any, by which the price of the Deliverable Shares, will change. In addition, the price, if any, at which you could sell your Callable STRIDES in a secondary market transaction is expected to be affected by the factors that we considered in setting the economic terms of the Callable STRIDES, namely the underwriting discount paid in respect of the Callable STRIDES and other costs associated with the Callable STRIDES, and compensation for developing and hedging the product. Depending on the impact of these factors, you may receive significantly less than the $25 original public offering price per unit of your Callable STRIDES if sold before the stated maturity date.

In a situation where there has been no movement in the price of the Deliverable Shares and no changes in the market conditions or any other relevant factors from those existing on the date of this pricing supplement, the price, if any, at which you could sell your Callable STRIDES in a secondary market transaction is expected to be lower than the $25 original public offering price per unit. This is due to, among other things, our costs of developing, hedging and distributing the Callable STRIDES. Any potential purchasers for your Callable STRIDES in the secondary market are unlikely to consider these factors.

MLPF&S, our subsidiary, is the underwriter for the offering and sale of the Callable STRIDES. After the initial offering, MLPF&S currently intends to buy and sell Callable STRIDES to create a secondary market for holders of the Callable STRIDES, and may stabilize or maintain the Closing Market Price of the Callable STRIDES during the initial distribution. However, MLPF&S will not be obligated to engage in any of these market activities or to continue them once it has started.

MLPF&S also will be our agent for purposes of calculating, among other things, the Call Price and the number of Deliverable Shares deliverable to you on the maturity date. Under certain circumstances, these duties could result in a conflict of interest between MLPF&S as our subsidiary and its responsibilities as calculation agent.

Merrill Lynch & Co., Inc. is a holding company with various subsidiaries and affiliated companies that provide investment, financing, insurance and related services on a global basis.

For information about ML&Co., see the section entitled “Merrill Lynch & Co., Inc.” in the accompanying general prospectus supplement. You should also read other documents ML&Co. has filed with the Securities and Exchange Commission, which you can find by referring to the sections entitled “Where You Can Find More Information” and “Incorporation of Information We File with the SEC” in the accompanying general prospectus supplement and prospectus.

Your investment in the Callable STRIDES will involve certain risks. You should consider carefully the following discussion of risks and the discussion of risks included in the accompanying MTN prospectus supplement before you decide that an investment in the Callable STRIDES is suitable for you.

We will not repay you a fixed amount of principal on the maturity date or upon early redemption. If the Callable STRIDES have not been redeemed and we do not elect to exercise our call option on or prior to the maturity date, for each Callable STRIDES you own on the maturity date you will receive a number of Deliverable Shares equal to the then current Share Multiplier. Because the price of the Deliverable Shares is subject to market fluctuations, the value of the Deliverable Shares that we will deliver to you on the maturity date may be more or less than the original public offering price of the Callable STRIDES. The value of the Callable STRIDES may decline, and that decline could be substantial. If you purchase your Callable STRIDES in the initial distribution, and if, on the maturity date, the value of the Deliverable Shares has declined from its volume weighted average price on the Pricing Date, as adjusted by the application of the Share Multiplier, your investment in the Callable STRIDES will result in a loss to you of part or all of your initial investment.

In addition, if on any date the Closing Market Price of one Deliverable Share declines to less than $1.00, the Callable STRIDES will be redeemed early and you will receive for each Callable STRIDES you own (1) a number of Deliverable Shares equal to the then current Share Multiplier, (2) accrued and unpaid interest to but excluding the Redemption Date, as defined in this pricing supplement, and (3) a cash amount equal to the present value of the additional interest that would have been paid through the stated maturity but for the early redemption.

We may call all of the Callable STRIDES on any scheduled Business Day beginning March , 2008 to and including the maturity date. In the event that we elect to call the Callable STRIDES, you will receive only the Call Price and any accrued and unpaid interest to but excluding the Call Date, and you will not be entitled to receive Deliverable Shares on the maturity date. Due to our ability to call the Callable STRIDES, your total annualized yield will be capped by an amount of between 9% and 11% of the original public offering price.

Your yield may be lower than the yield on other standard debt securities of comparable maturity

The yield that you will receive on your Callable STRIDES, which could be negative, in addition to the interest payments you receive, may be less than the return you could earn on other investments. Your yield may be less than the yield you would earn if you bought a traditional interest bearing debt security of ML&Co. with the same stated maturity date. Your investment may not reflect the full opportunity cost to you when you take into account factors that affect the time value of money. Unlike traditional interest bearing debt securities, the Callable STRIDES do not guarantee the return of a principal amount on the maturity date.

Your return may be limited and will not be identical to the return of owning the Deliverable Shares

The opportunity to participate in the possible increases in the price of the Deliverable Shares through an investment in the Callable STRIDES is limited because the amount you receive if we call the Callable STRIDES will never exceed a total annualized yield between 9% and 11% of the original public offering price. However, if we choose not to exercise our call option and the value of the Deliverable Shares declines over the term of the Callable STRIDES, you will realize a decline in value of the Callable STRIDES and will lose a part or all of your initial investment.

In addition, your return on the Callable STRIDES will not reflect the return you would realize if you actually owned the Deliverable Shares and received the dividends, if any, paid on the Deliverable Shares. You will not be entitled to receive dividends, if any, paid on the Deliverable Shares unless and until you actually hold the Deliverable Shares on the applicable record date for the payment of a dividend.

There may be an uncertain trading market for the Callable STRIDES and the market price you may receive or be quoted for your Callable STRIDES on a date prior to the stated maturity date will be affected by this and other important factors including our costs of developing, hedging and distributing the Callable STRIDES

We have applied to have the Callable STRIDES listed on AMEX under the trading symbol “BLB”. If approval of this application is granted, the Callable STRIDES will be listed on AMEX at the time of such approval. We make no representation, however, that the Callable STRIDES will be listed on AMEX or, if listed, will remain listed for the entire term of the Callable STRIDES. In addition, if less than 1,000,000 units of the Callable STRIDES are sold, they will not be listed on the AMEX. In any event, you should be aware that the listing of the Callable STRIDES on AMEX does not necessarily ensure that a trading market will develop for the Callable STRIDES. If a trading market does develop, there can be no assurance that there will be liquidity in the trading market. The development of a trading market for the Callable STRIDES will depend on our financial performance and other factors, such as the appreciation, if any, in the price of the Deliverable Shares. In addition, it is unlikely that increases or decreases in the secondary market price of the Callable STRIDES will correlate exactly with increases or decreases in the price of the Deliverable Shares.

If the trading market for the Callable STRIDES is limited, there may be a limited number of buyers for your Callable STRIDES if you do not wish to hold your investment until the stated maturity date. This may affect the price you receive.

If a market-maker (which may be MLPF&S) makes a market in the Callable STRIDES, the price it quotes would reflect any changes in market conditions and other relevant factors. In addition, the price at which you could sell your Callable STRIDES in a secondary market transaction is expected to be affected by factors that we considered in setting the economic terms of the Callable STRIDES, namely the underwriting discount paid in respect of the Callable STRIDES and other costs associated with the Callable STRIDES, and compensation for developing and hedging the product. This listed price could be higher or lower than the original issue price. MLPF&S is not obligated to make a market in the Callable STRIDES.

Assuming there is no change in the price of the Deliverable Shares and no change in market conditions or any other relevant factors, the price at which a purchaser (which may include MLPF&S) might be willing to purchase your Callable STRIDES in a secondary market transaction is expected to be lower than the original issue price. This is due to, among other things, the fact that the original issue price included, and secondary market prices are likely to exclude, the underwriting discount paid with respect to, and the developing and hedging costs associated with, the Callable STRIDES.

Many factors affect the trading value of the Callable STRIDES; these factors interrelate in complex ways and the effect of any one factor may offset or magnify the effect of another factor

The trading value of the Callable STRIDES will be affected by factors that interrelate in complex ways. The effect of one factor may offset the increase in the trading value of the Callable STRIDES caused by another factor and that the effect of one factor may exacerbate the decrease in the trading value of the Callable STRIDES caused by another factor. For example, an increase in United States interest rates may offset some or all of any increase in the trading value of the Callable STRIDES attributable to another factor, such as an increase in the price of the Deliverable Shares. The following paragraphs describe the expected impact on the market value of the Callable STRIDES given a change in a specific factor, assuming all other conditions remain constant.

The price of the Deliverable Shares is expected to affect the trading value of the Callable STRIDES. We expect that the market value of the Callable STRIDES will depend substantially on the price of the Deliverable Shares. However, you generally should not expect the increase or decrease in the market value of your Callable STRIDES to be identical to the increase or decrease in the market value of the Deliverable Shares. For example, if you choose to sell your Callable STRIDES when the price of the Deliverable Shares, as adjusted for the Share Multiplier, exceeds the original public offering price, you may receive substantially less than the current market value of the Deliverable Shares because of the expectation that the price of the Deliverable Shares will continue to fluctuate until the maturity date and the fact that the Callable STRIDES are callable at the option of ML&Co.

Changes in the levels of interest rates are expected to affect the trading value of the Callable STRIDES. We expect that changes in interest rates will affect the trading value of the Callable STRIDES. Generally, if United States interest rates increase, we expect that the trading value of the Callable STRIDES will

decrease and, conversely, if United States interest rates decrease, we expect that the trading value of the Callable STRIDES will increase.

Changes in the volatility of the Deliverable Shares are expected to affect the trading value of the Callable STRIDES. Volatility is the term used to describe the size and frequency of price and/or market fluctuations. If the volatility of the Deliverable Shares increases or decreases, the trading value of the Callable STRIDES may be adversely affected.

As the time remaining to maturity of the Callable STRIDES decreases, the “time premium” associated with the Callable STRIDES is expected to decrease. We anticipate that before their maturity, the Callable STRIDES may trade at a value above that which would be expected based on the level of interest rates and the price of the Deliverable Shares. This difference will reflect a “time premium” due to expectations concerning the price of the Deliverable Shares during the period before the stated maturity of the Callable STRIDES. However, as the time remaining to maturity decreases, we expect that this premium will decrease, lowering the trading value of the Callable STRIDES.

Changes in dividend yields of the Deliverable Shares are expected to affect the trading value of the Callable STRIDES. In general, if the dividend yield on the Deliverable Shares increases, we expect the trading value of the Callable STRIDES to decrease and, conversely, if the dividend yield on the Deliverable Shares decrease, we expect the trading value of the Callable STRIDES will increase.

Changes in our credit ratings may affect the trading value of the Callable STRIDES. Our credit ratings are an assessment of our ability to pay our obligations. Consequently, real or anticipated changes in our credit ratings may affect the trading value of the Callable STRIDES. However, because your return on your Callable STRIDES is dependent upon factors in addition to our ability to pay our obligations under the Callable STRIDES, such as the percentage change, if any, in the price of the Deliverable Shares on the maturity date, an improvement in our credit ratings will not reduce the other investment risks related to the Callable STRIDES.

In general, assuming all relevant factors are held constant, we expect that the effect on the trading value of the Callable STRIDES of a given change in some of the factors listed above will be less if it occurs later in the term of the Callable STRIDES than if it occurs earlier in the term of the Callable STRIDES. We expect, however, that the effect on the trading value of the Callable STRIDES of a given change in the price of the Deliverable Shares will be greater if it occurs later in the term of the Callable STRIDES than if it occurs earlier in the term of the Callable STRIDES.

New York State law governs the 1983 Indenture under which the Callable STRIDES will be issued. New York has usury laws that limit the amount of interest that can be charged and paid on loans, which includes debt securities like the Callable STRIDES. Under present New York law, the maximum rate of interest is 25% per annum on a simple interest basis. This limit may not apply to debt securities in which $2,500,000 or more has been invested.

While we believe that New York law would be given effect by a state or federal court sitting outside of New York, many other states also have laws that regulate the amount of interest that may be charged to and paid by a borrower. We promise, for the benefit of the holders of the Callable STRIDES, to the extent permitted by law, not to voluntarily claim the benefits of any laws concerning usurious rates of interest.

The Underlying Company has no obligations relating to the Callable STRIDES and no diligence has been performed with respect to the Underlying Company

We are not affiliated with the Underlying Company, and the Underlying Company has not authorized or approved the Callable STRIDES in any way. Further, the Underlying Company has no financial or legal obligation with respect to the Callable STRIDES or amounts to be paid to you, including any obligation to take the needs of ML&Co. or of beneficial owners of the Callable STRIDES into consideration for any reason. The Underlying Company will not receive any of the proceeds of the offering of the Callable STRIDES and is not responsible for, and has not participated in, the offering of the Callable STRIDES and is not responsible for, and will not participate in, the determination or calculation of the amount receivable by beneficial owners of the Callable STRIDES.

Neither ML&Co. nor MLPF&S have conducted any due diligence inquiry with respect to the Underlying Company in connection with the offering of the Callable STRIDES; and they make no representation

as to the completeness or accuracy of publicly available information regarding the Underlying Company or as to the future performance of the Deliverable Shares. Any prospective purchaser of the Callable STRIDES should undertake such independent investigation of the Underlying Company as in its judgment is appropriate to make an informed decision with respect to an investment in the Callable STRIDES.

Holders of the Callable STRIDES will not be entitled to any rights in the Deliverable Shares including, for example, the right to receive dividends or other distributions, voting rights and the right to tender or exchange common stock in any tender or exchange offer by the Underlying Company or any third party.

Purchases and sales of the Deliverable Shares by us and our affiliates may affect your return

We and our affiliates may from time to time buy or sell the Deliverable Shares or futures or options contracts on the Deliverable Shares for our own accounts for business reasons and expect to enter into these transactions in connection with hedging our obligations under the Callable STRIDES. These transactions could affect the price of the Deliverable Shares and, in turn, the value of the Callable STRIDES in a manner that would be adverse to your investment in the Callable STRIDES. Any purchases or sales by us, our affiliates or others on our behalf on or before the Pricing Date may temporarily increase the price of the Deliverable Shares. Temporary increases or decreases in the market price of the Deliverable Shares may also occur as a result of the purchasing activities of other market participants. Consequently, the price of the Deliverable Shares may change subsequent to the Pricing Date, affecting the market value of the Callable STRIDES and therefore the trading value of the Callable STRIDES.

MLPF&S, our subsidiary, is our agent for purposes of calculating, among other things, the Call Price and the number of Deliverable Shares deliverable to you on the maturity date. Under certain circumstances, MLPF&S as our subsidiary and its responsibilities as calculation agent for the Callable STRIDES could give rise to conflicts of interest. These conflicts could occur, for instance, in connection with its determination of whether the Share Multiplier shall be adjusted, or in connection with judgments that it would be required to make with regard to such adjustments. MLPF&S is required to carry out its duties as calculation agent in good faith and using its reasonable judgment. However, you should be aware that because we control MLPF&S, potential conflicts of interest could arise.

We expect to enter into arrangements to hedge the market risks associated with our obligations in connection with the Callable STRIDES. We may seek competitive terms in entering into the hedging arrangements for the Callable STRIDES, but are not required to do so, and we may enter into such hedging arrangements with one of our subsidiaries or affiliated companies. Such hedging activity is expected to result in a profit to those engaging in the hedging activity, which could be more or less than initially expected, but which could also result in a loss for the hedging counterparty.

You should consider the tax consequences of investing in the Callable STRIDES, aspects of which are uncertain. See the section entitled “United States Federal Income Taxation” in this pricing supplement.

ML&Co. will issue the Callable STRIDES as a series of senior unsecured debt securities entitled “Medium-Term Notes, Series C,” which is more fully described in the MTN prospectus supplement, under the 1983 Indenture, which is more fully described in the accompanying general prospectus supplement. The Bank of New York has succeeded JPMorgan Chase Bank, N.A. as the trustee under such indenture. Unless redeemed or called by us, the Callable STRIDES will mature on March , 2009. Information included in this pricing supplement supersedes information in the accompanying MTN prospectus supplement, general prospectus supplement and prospectus to the extent that it is different from that information. The CUSIP for the Callable STRIDES is .

The Callable STRIDES may be called by ML&Co. as described below, but are not otherwise subject to redemption by us at our option or by any holder at its option before the stated maturity except as described below.

The initial Share Multiplier for the Callable STRIDES, when multiplied by the volume weighted average price of the Deliverable Shares on the Pricing Date, will equal $25, the original public offering price of one unit of the Callable STRIDES. The volume weighted average price (“Volume Weighted Average Price”) will, absent a determination of a manifest error, be the price as shown on page “AQR” on Bloomberg L.P. for trading in the Deliverable Shares taking place on all U.S. exchanges from 9:30 a.m. to 4:05 p.m., New York City time. The Share Multiplier will be subject to adjustment for certain corporate events relating to the Underlying Company as described in this pricing supplement.

ML&Co. will issue the Callable STRIDES in denominations of whole units each with a $25 original public offering price per unit. You may transfer the Callable STRIDES only in whole units. You will not have the right to receive physical certificates evidencing your ownership except under limited circumstances. Instead, we will issue the Callable STRIDES in the form of a global certificate, which will be held by The Depositary Trust Company, also known as DTC, or its nominee. Direct and indirect participants in DTC will record your ownership of the Callable STRIDES. You should refer to the section entitled “Description of Debt Securities—Depositary” in the accompanying general prospectus supplement.

Unless the Callable STRIDES have been previously redeemed or called by us, a holder of a Callable STRIDES will be entitled to receive a cash payment of accrued and unpaid interest and a number of Deliverable Shares equal to the then current Share Multiplier. The initial Share Multiplier will be determined on the Pricing Date so that the product of the Volume Weighted Average Price of the Deliverable Shares on the Pricing Date and the initial Share Multiplier equals $25, the original public offering price of one unit of the Callable STRIDES. The Share Multiplier will be set forth in the final pricing supplement made available in connection with sales of the Callable STRIDES. The Share Multiplier will be subject to adjustment for certain events described under “—Share Multiplier Adjustments”, “—Reorganization Events” and “—Alternative Dilution and Reorganization Adjustments” in this pricing supplement.

If the maturity date is not a Business Day, we will deliver the Deliverable Shares and make all accrued and unpaid interest payments on the first Business Day following the maturity date and no additional interest will accrue as a result of the delay.

All determinations made by the calculation agent in good faith, absent a determination of a manifest error, will be conclusive for all purposes and binding on ML&Co. and the holders and beneficial owners of the Callable STRIDES.

The Callable STRIDES will bear interest at a rate of 9% per year on the $25 original public offering price per unit from and including March , 2007 or from the most recent interest payment date for which interest has been paid or provided for, to but excluding the stated maturity date, the Call Date or Redemption Date, as applicable. Unless earlier redeemed or called, we will pay interest on the Callable STRIDES in cash quarterly in arrears on March , June , September , and December , of each year, beginning on June , 2007 and on the maturity date, the Call Date or Redemption Date, as applicable. We will pay this interest to the persons in whose names the Callable STRIDES are registered at the close of business on the immediately preceding March , June , September and December , respectively, whether or not a Business Day. Notwithstanding the foregoing, upon redemption or if called by ML&Co., the final payment of interest will be paid to the person to whom ML&Co. delivers the Deliverable Shares or the Call Price, as the case may be, subject to the conditions described under “Redemption Event” in this pricing supplement. Interest on the Callable STRIDES will be computed on the basis of a 360-day year of twelve 30-day months. If an interest payment date falls on a day that is not a Business Day, that interest payment will be made on the next Business Day and no additional interest will accrue as a result of the delayed payment.

“Business Day” means any day other than a Saturday or a Sunday that is not a day on which banking institutions in The City of New York are authorized or obligated by law, regulation or executive order to close and with respect to any day on which securities are to be delivered is also a day that is a Trading Day.

“Trading Day” means a day on which the New York Stock Exchange (the “NYSE”), AMEX and The Nasdaq Stock Market (“Nasdaq”) are open for trading as determined by the calculation agent.

We will not distribute fractional Deliverable Shares. If the number of Deliverable Shares to be delivered on the maturity date is not divisible by a whole number, we will aggregate all share amounts due to a registered holder on the maturity date, and, in lieu of delivering a fractional Deliverable Share, we will pay to the registered holder the cash value of the fractional share based on the Closing Market Price of the Deliverable Shares. While the Callable STRIDES are held at the depositary, the sole registered holder will be the depositary. Depositary participants have different policies pertaining to fractional shares. You should consult the participant through which you hold the Callable STRIDES to ascertain the participant’s specific policy.

ML&Co., in its sole discretion, may call the Callable STRIDES, in whole but not in part, on any scheduled Business Day beginning on March , 2008 to and including the maturity date (the date on which the call, if any, occurs being the “Call Date”) by giving notice to the trustee on any Business Day at least five Business Days prior to the Call Date. The notice to the trustee will specify the Call Date, Call Price and amount of interest payable on the Call Date. The trustee will provide notice of the call election to the registered holders of the Callable STRIDES, specifying the Call Date, Call Price and amount of interest payable on the Call Date. The depositary, as the registered holder, will receive the notice of the call. So long as the depositary is the registered holder of the Callable STRIDES, notice of our election to exercise the call option will be forwarded as more fully described under “Description of Debt Securities—Depositary” in the accompanying general prospectus supplement.

The Call Price on any Call Date will be the amount of cash, per Callable STRIDES, that when discounted from the Call Date to the original issue date by a discount factor based on an annual yield to call between 9% and 11% and when added to the present value of all interest payments made through and including the applicable Call Date discounted to the original issue date by that same discount factor, will equal the original public offering price. The actual yield to call will be determined on the Pricing Date and will be set forth in the final pricing supplement made available in connection with sales of the Callable STRIDES. The present value of each interest payment on the Callable STRIDES used to determine the Call Price will be calculated assuming each payment is made on the calendar day scheduled for that payment. A delay in payment may arise for reasons such as a scheduled interest payment date falling on a day that is not a Business Day and, as a result, the payment being delayed until the next succeeding Business Day. Any delay will not be taken into account when calculating the applicable Call Price. The Call Price will not include the amount of unpaid interest accrued to but excluding the Call Date; however, on the Call Date you will receive the Call Price plus an amount equal to the accrued and unpaid interest (the “Final Amount”). The yield to call represents the annual interest rate used in determining the present values, discounted to the original issue date, of all payments made or to be made on the

Callable STRIDES, including the Call Price and all interest payments, such that the sum of these present values is equal to the original public offering price.

Based on an assigned original issue date, stated maturity date and yield to call, the following table sets forth the hypothetical month-end, midmonth, first and last Call Prices from February 20, 2008 through February 19, 2009, the hypothetical first Call Date and the hypothetical stated maturity date, respectively. For an example of the Call Price calculation, see Annex A to this pricing supplement. The actual first and last Call Prices will be determined on the Pricing Date and will be set forth in the final pricing supplement made available in connection with the sales of the Callable STRIDES. If we elect to exercise our call option, the Call Price will be disclosed in the notice we deliver to DTC in connection with our call of the Callable STRIDES.

The following graph shows the relationship between the Call Price and the Call Price plus accrued but unpaid interest from February 20, 2008, the hypothetical first Call Date through February 19, 2009, the hypothetical stated maturity date.

The following table illustrates, for a range of hypothetical Closing Market Prices of the Deliverable Shares on the maturity date:

This table assumes the same hypothetical Pricing Date, original issue date, initial Share Multiplier, interest rate, interest payment dates, yield to call and maturity date which were used in connection with the hypothetical Call Price calculations in the previous table. This table also assumes that the Callable STRIDES have not been called or redeemed prior to the maturity date and will be called by ML&Co. on the maturity date if the total annualized yield on the Callable STRIDES would otherwise be greater than 10% on the maturity date.

If on any date the Closing Market Price of one Deliverable Share is less than $1.00, the Callable STRIDES will be redeemed by us on the third Business Day following that date (the “Redemption Date”). If this redemption event is triggered, then on the Redemption Date for each unit of Callable STRIDES, ML&Co. will deliver, in addition to such number of Deliverable Shares equal to the then current Share Multiplier and accrued and unpaid interest to the Redemption Date (the “accrued interest amount”), a cash amount equal to the present value of the additional interest that would have been paid through the stated maturity but for the early redemption of the Callable STRIDES (the “present value amount”). The number of Deliverable Shares, plus the accrued interest amount and present value amount payable, in connection with one Callable STRIDES are together referred to as the “Redemption Price” of the Callable STRIDES. The present value amount will be calculated by the calculation agent, whose determination will be conclusive for all purposes and binding on ML&Co. and the holders and beneficial owners of the Callable STRIDES.

The Redemption Price will be delivered and paid to the holder of a Callable STRIDES on the Redemption Date; provided, however, that in the event that the Redemption Date falls after a record date for the payment of interest on the Callable STRIDES but prior to the next succeeding scheduled interest payment date, the portion of the Redemption Price equal to the accrued interest amount will be paid to the persons who were the holders of the Callable STRIDES as of that record date.

In case an Event of Default with respect to any Callable STRIDES has occurred and is continuing, the amount payable to a holder of a Callable STRIDES upon any acceleration permitted by the Callable STRIDES, with respect to each $25 original public offering price per unit, will be equal to the amount payable on the maturity date, calculated as though the date of acceleration were the maturity date. The value of the amount payable upon acceleration will not, however, be greater than an amount equal to the Final Amount, calculated as though the date of acceleration were the Call Date (whether or not that date is before or after March , 2008). If a bankruptcy proceeding is commenced in respect of ML&Co., the claim of the holder of a Callable STRIDES may be limited, under Section 502(b)(2) of Title 11 of the United States Code, to the $25 original public offering price per unit of the Callable STRIDES plus an additional amount of contingent interest calculated as though the date of the commencement of the proceeding were the stated maturity date of the Callable STRIDES.

In case of default in payment of the Callable STRIDES, whether on the stated maturity date or upon acceleration, from and after that date the Callable STRIDES will bear interest, payable upon demand of their holders, at the then current Federal Funds Rate, reset daily, as determined by reference to Reuters page H15FED1, to the extent that payment of such interest shall be legally enforceable, on the unpaid amount due and payable on that date in accordance with the terms of the Callable STRIDES to the date payment of that amount has been made or duly provided for. “Reuters page H15FED1” means such page or any successor page, or page on a successor service, displaying such rate. If the Federal Funds Rate cannot be determined by reference to Reuters page H15FED1, such rate will be determined in accordance with the procedures set forth in the accompanying MTN prospectus supplement relating to the determination of the Federal Funds Rate in the event of the unavailability of Moneyline Telerate page 120 (the predecessor of Reuters page H15FED1).

The Share Multiplier used to determine the number of Deliverable Shares to be delivered on the maturity date is subject to adjustment by the calculation agent as described in this section. However, if we elect to call the Callable STRIDES, you will receive only the Final Amount, and you will not be entitled to receive the Deliverable Shares.

No adjustments to the Share Multiplier will be required unless the Share Multiplier adjustment would require a change of at least 0.1% in the Share Multiplier then in effect. The Share Multiplier resulting from any of the adjustments specified below will be rounded to the eighth decimal place with five one-billionths being rounded upward. The calculation agent will not be required to make any adjustments to the Share Multiplier after the close of business on the fourth Business Day immediately prior to the maturity date or early redemption date, as applicable.

No adjustments to the Share Multiplier will be required other than those specified below. However, the calculation agent may, at its sole discretion, make additional adjustments to the Share Multiplier to reflect changes occurring in relation to the Deliverable Shares or any other security received in a reorganization event in other circumstances where the calculation agent determines that it is appropriate to reflect those changes to ensure an equitable result. The required adjustments specified below do not cover all events that could affect the Closing Market Price of the Deliverable Shares, including, without limitation, a partial tender or exchange offer for the Deliverable Shares.

MLPF&S as calculation agent will be solely responsible for the determination and calculation of any adjustments to the Share Multiplier and of any related determinations and calculations with respect to any distributions of stock, other securities or other property or assets, including cash, in connection with any corporate event described below; and its determinations and calculations will be conclusive absent a determination of a manifest error.

No adjustments will be made for certain other events, such as offerings of common stock by the Underlying Company for cash or in connection with the occurrence of a partial tender or exchange offer for the Deliverable Shares by the Underlying Company.

ML&Co. will, within ten Business Days following the occurrence of an event that requires an adjustment to the Share Multiplier, or, if later, within ten Business Days following the date on which ML&Co. becomes aware of this occurrence, provide written notice to the trustee, which will provide notice to the holders of the Callable STRIDES of the occurrence of this event and a statement in reasonable detail setting forth the adjusted Share Multiplier.

If the Deliverable Shares are subject to a stock split or reverse stock split, then once any split has become effective, the Share Multiplier relating to the Deliverable Shares will be adjusted to equal the product of the prior Share Multiplier and the number of shares which a holder of record of one Deliverable Share before the effective date of that stock split or reverse stock split would have owned or been entitled to receive immediately following the applicable effective date.

If the Deliverable Shares are subject to a (i) stock dividend, i.e., issuance of additional Deliverable Shares, that is given ratably to all holders of record of the Deliverable Shares or (ii) distribution of Deliverable Shares as a result of the triggering of any provision of the corporate charter of the Underlying Company, then, once the dividend has become effective and the Deliverable Shares are trading ex-dividend, the Share Multiplier will be adjusted so that the new Share Multiplier will equal the prior Share Multiplier plus the product of:

There will be no adjustments to the Share Multiplier to reflect any cash dividends or cash distributions paid with respect to the Deliverable Shares other than Extraordinary Dividends, as described below, and distributions described under the section entitled “—Reorganization Events” below.

An “Extraordinary Dividend” means, with respect to a cash dividend or other distribution with respect to the Deliverable Shares, a dividend or other distribution which exceeds the immediately preceding non-Extraordinary Dividend on the Deliverable Shares (as adjusted for any subsequent corporate event requiring an adjustment hereunder, such as a stock split or reverse stock split) by an amount equal to at least 10% of the Closing Market Price of the Deliverable Shares on the Trading Day preceding the ex-dividend date with respect to the Extraordinary Dividend (the “ex-dividend date”). If an Extraordinary Dividend occurs with respect to the Deliverable Shares, the Share Multiplier will be adjusted on the ex-dividend date with respect to the Extraordinary Dividend so that the new Share Multiplier will equal the product of:

The “Extraordinary Dividend Amount” with respect to an Extraordinary Dividend for the Deliverable Shares will equal:

To the extent an Extraordinary Dividend is not paid in cash, the value of the non-cash component will be determined by the calculation agent, whose determination will be conclusive. A distribution on the Deliverable Shares described in clause (a), (d) or (e) of the section entitled “—Reorganization Events” below that also constitutes an Extraordinary Dividend will only cause an adjustment pursuant to clause (a), (d) or (e) under the section entitled “—Reorganization Events”. A distribution on the Deliverable Shares described in the section entitled “—Issuance of transferable rights or warrants” that also constitutes an Extraordinary Dividend will only cause an adjustment pursuant to that section.

If the Deliverable Shares (or any other security for which a Closing Market Price must be determined for purposes of the Callable STRIDES) are listed or admitted to trading on a national securities exchange in the United States registered under the Exchange Act (“registered national securities exchange”), are included in the OTC Bulletin Board Service (“OTC Bulletin Board”) operated by the National Association of Securities Dealers, Inc. (the “NASD”), or are quoted on a United States quotation medium or inter-dealer quotation system (e.g., the Pink-Sheets), then the Closing Market Price for any date of determination on any Trading Day means for one Deliverable Share (or any other security for which a Closing Market Price must be determined for purposes of the Callable STRIDES):

quotation system on that day (without taking into account any extended or after-hours trading session); or

If the Deliverable Shares (or any other security for which a Closing Market Price must be determined for purposes of the Callable STRIDES) are not listed on a registered national securities exchange, are not included in the OTC Bulletin Board, or are not quoted on any other United States quotation medium or inter-dealer system, then the Closing Market Price for any date of determination on any Trading Day means for one Deliverable Share (or any other security for which a Closing Market Price must be determined for purposes of the Callable STRIDES) then the last reported sale price on that day on the foreign securities exchange on which that security is listed or admitted to trading with the greatest volume of trading for the calendar month preceding that Trading Day as determined by the calculation agent; provided that if the last reported sale price is for a transaction which occurred more than four hours prior to the close of that foreign exchange, then the Closing Market Price will mean the U.S. dollar equivalent (as determined by the calculation agent in its reasonable judgment) of the average of the last available bid and offer price on that foreign exchange.

“Market Disruption Event” means either of the following events as determined by the calculation agent:

will constitute a suspension or material limitation of trading in options contracts related to the Deliverable Shares; and

If the Exchange Property, as defined below under “—Reorganization Events” in this pricing supplement, includes securities other than the Deliverable Shares, then the above definition will be revised to include each of those securities in the same manner as the Deliverable Shares are considered in determining whether a Market Disruption Event exists.

The occurrence of a Market Disruption Event could affect the calculation of the payment on the maturity date or the redemption date you will receive. See “—Payment on the Maturity Date” and “—Redemption Event” in this pricing supplement.

If the Underlying Company issues transferable rights or warrants to all holders of record of the Deliverable Shares to subscribe for or purchase the Deliverable Shares, including new or existing rights to purchase the Deliverable Shares pursuant to a shareholder’s rights plan or arrangement, then the Share Multiplier will be adjusted on the Business Day immediately following the issuance of those transferable rights or warrants so that the new Share Multiplier will equal the prior Share Multiplier plus the product of:

The number of shares that can be purchased will be based on the Closing Market Price of the Deliverable Shares on the date the new Share Multiplier is determined. The cash value of those warrants or rights, if the warrants or rights are traded on a national securities exchange, will equal the closing price of that warrant or right, or, if the warrants or rights are not traded on a national securities exchange, will be determined by the calculation agent and will equal the average of the bid prices obtained from three dealers at 3 p.m. on the date the new Share Multiplier is determined, provided that if only two of those bid prices are available, then the cash value of those warrants or rights will equal the average of those bids and if only one of those bids is available, then the cash value of those warrants or rights will equal that bid.

then the method of determining the amount payable on each Callable STRIDES will be adjusted as set forth below.

“Exchange Property” will consist of the securities, cash or any other assets distributed to holders of record of the Deliverable Shares in or as a result of the Reorganization Event, and where the Deliverable Shares continue to be held by the holders of the Deliverable Shares receiving that distribution, the Deliverable Shares. The Exchange Property will either:

in each case, with no interest accruing on the Callable STRIDES following the early redemption date. If the calculation agent exercises the option to liquidate the Exchange Property, ML&Co. will give notice to the trustee as to the election to liquidate the Exchange Property, which notice will specify the method by which the Exchange Property will be sold. The date of early redemption of the Callable STRIDES will be the fifth Business Day following the last date on which the Exchange Property is sold;

In the event Exchange Property consists of securities, those securities will, in turn, be subject to the antidilution adjustments set forth in this pricing supplement.

In the case of a consummated tender or exchange offer or going-private transaction involving Exchange Property of a particular type, Exchange Property will be deemed to include the amount of cash or other property paid by the offeror in the tender or exchange offer with respect to that Exchange Property (in an amount determined on the basis of the rate of exchange in that tender or exchange offer or going-private transaction). In the event of a tender or exchange offer or a going-private transaction with respect to Exchange Property in which an offeree may elect to receive cash or other property, Exchange Property will be deemed to include the kind and amount of cash and other property received by offerees who elect to receive cash.

If we elect to call the Callable STRIDES you will receive only the Final Amount, and you will not be entitled to receive the Deliverable Shares, any Exchange Property or any other consideration on the maturity date.

MLPF&S as calculation agent will be solely responsible for determination and calculation of the Exchange Property if a Reorganization Event occurs and the amount due upon early redemption, including the determination of the cash value of any Exchange Property, if necessary, and its determinations and calculations will be conclusive absent a determination of a manifest error.

If the Underlying Company ceases to file the financial and other information with the SEC in accordance with Section 13(a) of the Securities Exchange Act of 1934 and the calculation agent determines in its sole discretion that sufficiently similar information is not otherwise available to you, the maturity date of the Callable STRIDES will be accelerated to the fifth Business Day following the date of that determination and the amount payable to you will be calculated as though the date of early repayment were the stated maturity date of the Callable STRIDES. If the calculation agent determines that sufficiently similar information is available to you, the Reorganization Event will be deemed to have not occurred.

The calculation agent may elect at its discretion to not make any of the adjustments to the Share Multiplier or to the method of determining the amount payable on each Callable STRIDES described above under “—Share Multiplier Adjustments” and “—Reorganization Events”, but may instead make adjustments in its discretion to the Share Multiplier or the method of determining the amount payable on each Callable STRIDES that will reflect the adjustments to the extent practicable made by the Options Clearing Corporation on options contracts on the Deliverable Shares or any successor common stock. ML&Co. will provide notice of that election to the trustee not more than two Business Days following the date that the Options Clearing Corporation publishes notice of its adjustments relating to the Deliverable Shares and will detail in that notice the actual adjustment made to the Share Multiplier or to the method of determining the amount payable on each Callable STRIDES.

The following information has been derived from publicly available documents published by the Underlying Company. We make no representation or warranty as to the accuracy or completeness of the following information. The Underlying Company has disclosed that it is a specialty retailer of consumer electronics, home-office products, entertainment software, appliances and related services, both through retail stores and commercial Web sites. Because the Deliverable Shares are registered under the Securities Exchange Act of 1934 the Underlying Company is required to file periodically certain financial and other information specified by the SEC. Information provided to or filed with the SEC by the Underlying Company can be located at the SEC’s facilities or through the SEC’s web site by reference to SEC file number 001-09595. See “Where You Can Find More Information” in the accompanying general prospectus supplement and prospectus. ML&Co. makes no representation or warranty as to the accuracy or completeness of the information or reports.

The selection of the Deliverable Shares is not a recommendation to buy or sell the Deliverable Shares. Neither ML&Co. nor any of its affiliates make any representation to any purchaser of the Callable STRIDES as to the performance of the Deliverable Shares.

ML&Co. is not affiliated with the Underlying Company. The Underlying Company has no obligations with respect to the Callable STRIDES. This pricing supplement relates only to the Callable STRIDES and does not relate to the Deliverable Shares or other securities of the Underlying Company. All disclosures contained in this pricing supplement regarding the Underlying Company are derived from the publicly available documents described above. Neither ML&Co. nor MLPF&S has participated in the preparation of these documents or made any due diligence inquiry with respect to the Underlying Company in connection with the offering of the Callable STRIDES. Neither ML&Co. nor MLPF&S makes any representation that the publicly available documents or any other publicly available information regarding the Underlying Company are accurate or complete. Furthermore, there can be no assurance that all events occurring prior to the date hereof, including events that would affect the accuracy or completeness of the publicly available documents described above, that would affect the trading price of the Deliverable Shares have been publicly disclosed. Subsequent disclosure of any events or the disclosure of or failure to disclose material future events concerning the Underlying Company could affect the value of the Deliverable Shares to be received on the maturity date of the Callable STRIDES and therefore the trading prices of the Callable STRIDES. Neither ML&Co. nor any of its affiliates make any representation to any purchaser of the Callable STRIDES as to the performance of the Deliverable Shares.

ML&Co. or its affiliates may presently or from time to time engage in business, directly or indirectly, with the Underlying Company including extending loans to, or making equity investments in, the Underlying Company or providing investment banking or advisory services to the Underlying Company, including merger and acquisition advisory services. In the course of that business, ML&Co. or its affiliates may acquire non-public information with respect to the Underlying Company and, in addition, one or more affiliates of ML&Co. may publish research reports with respect to the Underlying Company.

Any prospective purchaser of the Callable STRIDES should undertake an independent investigation of the Underlying Company as in its judgment is appropriate to make an informed decision with respect to an investment in the Callable STRIDES.

The Deliverable Shares are principally traded on the NYSE. The following table sets forth the high and low closing prices for the calendar quarters during calendar years 2002 through January 31, 2007. On February 14, 2007, the Volume Weighted Average Price for the Deliverable Shares was $50.11 per share. The closing prices listed below were obtained from publicly available information at Bloomberg Financial Market, rounded to two decimal places. The historical closing prices of the Deliverable Shares should not be taken as an indication of future performance, and no assurance can be given that the price of the Deliverable Shares will not decrease. In addition, no assurance can be given that the price of the Deliverable Shares will increase so that the value of the Deliverable Shares that the holders of the Callable STRIDES may receive on the maturity date, if not previously called by us, or redeemed, will exceed the original public offering price of the Callable STRIDES.

The discussion below supplements the discussion set forth under the section entitled “United States Federal Income Taxation” that is contained in the accompanying MTN prospectus supplement and supersedes that discussion to the extent that it contains information that is inconsistent with that which is contained in the accompanying MTN prospectus supplement.

Set forth in full below is the opinion of Sidley Austin LLP, counsel to ML&Co. (“Tax Counsel”). As the law applicable to the U.S. federal income taxation of instruments such as the Callable STRIDES is technical and complex, the discussion below necessarily represents only a general summary. The following discussion is based upon laws, regulations, rulings and decisions now in effect, all of which are subject to change (including changes in effective dates) or possible differing interpretations. It deals only with Callable STRIDES held as capital assets and does not purport to deal with persons in special tax situations, such as financial institutions, insurance companies, real estate investment trusts, regulated investment companies, tax-exempt entities or persons holding Callable STRIDES in a tax-deferred or tax-advantaged account (except to the extent specifically discussed below), dealers in securities or currencies, traders in securities that elect to mark to market, persons subject to the alternative minimum tax, persons holding Callable STRIDES as a hedge against currency risks, as a position in a “straddle” or as part of a “hedging”, “conversion” or “integrated” transaction for tax purposes, or persons whose functional currency is not the United States dollar. It also does not deal with holders other than original purchasers (except where otherwise specifically noted). If a partnership holds the Callable STRIDES, the tax treatment of a partner in the partnership will generally depend upon the status of the partner and the activities of the partnership. Thus, persons who are partners in a partnership holding the Callable STRIDES should consult their tax advisors. Moreover, all persons considering the purchase of the Callable STRIDES should consult their own tax advisors concerning the application of U.S. federal income tax laws to their particular situations as well as any consequences of the purchase, ownership and disposition of the Callable STRIDES arising under the laws of any other taxing jurisdiction.

As used herein, the term “U.S. Holder” means a beneficial owner of a Callable STRIDES that is for U.S. federal income tax purposes (i) a citizen or resident of the United States, (ii) a corporation or a partnership (including an entity treated as a corporation or a partnership for U.S. federal income tax purposes) created or organized in or under the laws of the United States, any state thereof or the District of Columbia (unless, in the case of a partnership, Treasury regulations are adopted that provide otherwise), (iii) an estate the income of which is subject to U.S. federal income tax regardless of its source, (iv) a trust if a court within the United States is able to exercise primary supervision over the administration of the trust and one or more United States persons have the authority to control all substantial decisions of the trust or (v) any other person whose income or gain in respect of a Callable STRIDES is effectively connected with the conduct of a United States trade or business. Certain trusts not described in clause (iv) above in existence on August 20, 1996, that elect to be treated as United States persons will also be U.S. Holders for purposes of the following discussion. As used herein, the term “non-U.S. Holder” means a beneficial owner of a Callable STRIDES that is not a U.S. Holder.

There are no statutory provisions, regulations, published rulings or judicial decisions addressing or involving the characterization and treatment, for U.S. federal income tax purposes, of the Callable STRIDES or securities with terms substantially the same as the Callable STRIDES. Accordingly, the proper U.S. federal income tax characterization and treatment of the Callable STRIDES is uncertain. Pursuant to the terms of the Callable STRIDES, ML&Co. and every holder of a Callable STRIDES agree (in the absence of an administrative determination, judicial ruling or other authoritative guidance to the contrary) to characterize and treat a Callable STRIDES for all tax purposes as an investment unit consisting of the following components (the “Components”): (i) a debt instrument of ML&Co. (the “Debt Instrument”) with a fixed principal amount unconditionally payable on the maturity date equal to the principal amount of the Callable STRIDES and bearing stated interest at the stated interest rate for the Callable STRIDES and (ii) a contract (the “Forward Contract”) pursuant to which the holder agrees to use the principal payment due on the Debt Instrument to make a payment to ML&Co. in exchange for the right to receive on the maturity date a number of Deliverable Shares equal to the then current Share Multiplier (subject to our right to cancel the Forward Contract in the event that we exercise our right to call the Callable STRIDES prior to the maturity date). In the opinion of Tax Counsel, such characterization and tax treatment of the Callable STRIDES, although not the only reasonable characterization and tax treatment, is based on reasonable interpretations of law currently in effect

and, even if successfully challenged by the Internal Revenue Service (the “IRS”), will not result in the imposition of penalties. Furthermore, based on ML&Co.’s determination of the relative fair market values of the Components at the time of issuance of the Callable STRIDES, ML&Co. will assign % of the original issue price of the Callable STRIDES to the Debt Instrument and will assign % of the original issue price of the Callable STRIDES to the Forward Contract. Based upon the foregoing, a U.S. Holder who acquires a Callable STRIDES in connection with the original issuance thereof will be treated as having purchased the Debt Instrument for $ and as having received an initial payment (the “Initial Forward Contract Payment”) with respect to the Forward Contract in an amount equal to $ . The initial payment deemed to have been received by a U.S. Holder with respect to the Forward Contract (i.e., the Initial Forward Contract Payment) should only be taken into account by the U.S. Holder as an additional amount realized with respect to the Forward Contract on the earlier of the sale or other disposition of the Callable STRIDES by the U.S. Holder (including a redemption of the Callable STRIDES if we call the Callable STRIDES prior to the maturity date) or on the maturity date (which would reduce the U.S. Holder’s tax basis in any Deliverable Shares received thereby on the maturity date). ML&Co.’s allocation of the original issue price will be binding on a U.S. Holder of a Callable STRIDES, unless the U.S. Holder timely and explicitly discloses to the IRS that its allocation is different from ML&Co.’s. The characterization and tax treatment of the Callable STRIDES described above and ML&Co.’s allocation are not, however, binding on the IRS or the courts. No statutory, judicial or administrative authority directly addresses the characterization and tax treatment of the Callable STRIDES or instruments similar to the Callable STRIDES for U.S. federal income tax purposes, and no ruling is being requested from the IRS with respect to the Callable STRIDES.

Due to the absence of authorities that directly address instruments that are similar to the Callable STRIDES, significant aspects of the U.S. federal income tax consequences of an investment in the Callable STRIDES are not certain, and no assurance can be given that the IRS or the courts will agree with the characterization and tax treatment described above. Accordingly, prospective purchasers are urged to consult their tax advisors regarding the U.S. federal income tax consequences of an investment in a Callable STRIDES (including alternative characterizations and tax treatments of a Callable STRIDES) and with respect to any tax consequences arising under the laws of any state, local or foreign taxing jurisdiction. Unless otherwise stated, the following discussions are based on the assumption that the characterization and tax treatment and the allocation described above are accepted for U.S. federal income tax purposes.

Interest on the Debt Instrument. A U.S. Holder will generally include “qualified stated interest” equal to the stated interest on the Callable STRIDES in income in accordance with the U.S. Holder’s regular method of accounting for U.S. federal income tax purposes (subject to the bond premium rules). In addition, the U.S. Holder’s tax basis in the Debt Instrument will initially be the fair market value of the Debt Instrument as of the issue date.

Settlement of the Forward Contract. Upon the final settlement of the Forward Contract on the maturity date, a U.S. Holder would be deemed to have applied an amount (the “Forward Contract Payment Amount”) equal to the principal amount of the Debt Instrument less the Initial Forward Contract Payment toward the purchase of the Deliverable Shares, and a U.S. Holder should not recognize any gain or loss with respect to the Deliverable Shares received upon the final settlement of the Forward Contract. However, a U.S. Holder would be required to recognize gain or loss with respect to any cash received in lieu of fractional Deliverable Shares. The amount of that gain or loss would be equal to the difference, if any, between the amount of cash received and the portion of the Forward Contract Payment Amount that is allocable to those fractional Deliverable Shares. Any such gain or loss would be treated as short-term capital gain or loss. A U.S. Holder’s tax basis in the Deliverable Shares so received would be equal to the Forward Contract Payment Amount less the portion of the Forward Contract Payment Amount that is allocable to any fractional Deliverable Shares. A U.S. Holder’s holding period for the Deliverable Shares would begin on the day immediately following the maturity date. Notwithstanding the foregoing, any cash received on the maturity date that is attributable to accrued interest on the Debt Instrument would be taxed as described under “Tax Treatment of a Callable STRIDES—Interest on the Debt Instrument” above.

Upon a sale, exchange or redemption of a Callable STRIDES prior to the maturity date of the Callable STRIDES, a U.S. Holder would recognize taxable gain or loss equal to the difference between the amount

realized on that sale, exchange or redemption (as allocated among the Components in accordance with their relative fair market values) and a U.S. Holder’s tax basis in the Components deemed so sold, exchanged or redeemed. Any such gain or loss would be long-term or short-term capital gain or loss, depending upon the U.S. Holder’s holding period in respect of the Callable STRIDES (except, as described above, to the extent of any accrued original issue discount on the Debt Instrument not previously included in income by the U.S. Holder). For these purposes, the amount realized does not include any amount attributable to accrued interest on the Debt Instrument, which would be taxed as described under “Tax Treatment of a Callable STRIDES—Interest on the Debt Instrument” above. If on any date the Closing Market Price of one Deliverable Share is less than $1.00 and, as a result, the Callable STRIDES are redeemed by us on the third Business Day following that date, for these purposes, the Debt Instrument should be treated as having been redeemed for an amount equal to the sum of the principal amount of the Debt Instrument and the present value amount. In addition, in that event, the amount realized should not include any Deliverable Shares received by a U.S. Holder, which would be treated as a purchase of those Deliverable Shares in settlement of the Forward Contract for an amount equal to the Forward Contract Payment Amount.

If a U.S. Holder purchases the Debt Instrument for an amount that is greater than the sum of all amounts payable on the Debt Instrument after the purchase date other than payments of qualified stated interest (i.e., the principal amount), a U.S. Holder will be considered to have purchased the Debt Instrument with “amortizable bond premium” equal in amount to that excess. A U.S. Holder may elect to amortize that premium using a constant yield method over the remaining term of the Debt Instrument and may offset interest otherwise required to be included in respect of the Debt Instrument during any taxable year by the amortized amount of that excess for the taxable year. However, because the Callable STRIDES may be optionally called by ML&Co. prior to the maturity date, special rules would apply which could possibly result in a deferral of the amortization of some bond premium until later in the term of the Debt Instrument. U.S. Holders are urged to consult their own tax advisors regarding the application of these special rules. Any election to amortize bond premium applies to all taxable debt instruments acquired by the U.S. Holder on or after the first day of the first taxable year to which that election applies and may be revoked only with the consent of the IRS.

Due to the absence of authorities that directly address the proper characterization and treatment of the Callable STRIDES, no assurance can be given that the IRS will accept, or that a court will uphold, the characterization and tax treatment described above. In particular, the IRS could seek to analyze the U.S. federal income tax consequences of owning a Callable STRIDES under Treasury regulations governing contingent payment debt instruments (the “CPDI Regulations”).

ML&Co. will take the position that the CPDI Regulations do not apply to the Callable STRIDES. If the IRS were successful in asserting that the CPDI Regulations applied to the Callable STRIDES, the timing and character of income thereon would be significantly affected. Among other things, a U.S. Holder would be required to accrue as original issue discount, subject to the adjustments described below, in income at a “comparable yield” on the issue price, regardless of the U.S. Holder’s usual method of accounting for U.S. federal income tax purposes. In addition, the CPDI Regulations require that a projected payment schedule, which results in such a “comparable yield,” be determined, and that adjustments to income accruals be made to account for differences between actual payments and projected amounts (including upon receipt of the Deliverable Shares on the maturity date). Furthermore, any gain realized with respect to a Callable STRIDES would generally be treated as ordinary income, and any loss realized would generally be treated as ordinary loss to the extent of the U.S. Holder’s prior ordinary income inclusions (which were not previously reversed) with respect to the Callable STRIDES.

Even if the CPDI Regulations do not apply to the Callable STRIDES, other alternative U.S. federal income tax characterizations or treatments of the Callable STRIDES are also possible, which may also affect the timing and the character of the income or loss with respect to the Callable STRIDES. Accordingly, prospective purchasers are urged to consult their tax advisors regarding the U.S. federal income tax consequences of an investment in a Callable STRIDES.

Section 1260 of the Internal Revenue Code of 1986, as amended (the “Code”) treats a taxpayer owning certain types of derivative positions in property as having “constructive ownership” of that property, with the result that all or a portion of any long-term capital gain recognized by such taxpayer with respect to the derivative position will be recharacterized as ordinary income. In its current form, Section 1260 of the Code does not apply to a Callable STRIDES. If Section 1260 of the Code were to apply to a Callable STRIDES in the future, however, the effect on a U.S. Holder of a Callable STRIDES would be to treat all or a portion of any long-term capital gain recognized by such U.S. Holder on the sale, exchange, redemption or maturity of a Callable STRIDES (or upon the sale of any Deliverable Shares received thereon) as ordinary income. In addition, Section 1260 of the Code would impose an interest charge on any such gain that was recharacterized. U.S. Holders should consult their tax advisors regarding the potential application of Section 1260 of the Code, if any, to the purchase, ownership and disposition of a Callable STRIDES.

Section 511 of the Code generally imposes a tax, at regular corporate or trust income tax rates, on the “unrelated business taxable income” of certain tax-exempt organizations, including qualified pension and profit sharing plan trusts and individual retirement accounts. As discussed above, the U.S. federal income tax characterization and treatment of the Callable STRIDES is uncertain. Nevertheless, in general, if the Callable STRIDES are held for investment purposes, the amount of income or gain, if any, realized over the term of the Callable STRIDES, on the maturity date or upon a sale, exchange or redemption of a Callable STRIDES prior to the maturity date, or any income that would accrue to a holder of a Callable STRIDES if the Callable STRIDES were characterized as contingent payment debt instruments (as discussed above), will not constitute unrelated business taxable income. However, if a Callable STRIDES constitutes debt-financed property (as defined in Section 514(b) of the Code) by reason of indebtedness incurred by a holder of a Callable STRIDES to purchase the Callable STRIDES, all or a portion of any income or gain realized with respect to such Callable STRIDES may be classified as unrelated business taxable income pursuant to Section 514 of the Code. Moreover, prospective investors in the Callable STRIDES should be aware that whether or not any income or gain realized with respect to a Callable STRIDES which is owned by an organization that is generally exempt from U.S. federal income taxation pursuant to Section 501(a) of the Code constitutes unrelated business taxable income will depend upon the specific facts and circumstances applicable to such organization. Accordingly, any potential investors in the Callable STRIDES that are generally exempt from U.S. federal income taxation pursuant to Section 501(a) of the Code are urged to consult with their own tax advisors concerning the U.S. federal income tax consequences to them of investing in the Callable STRIDES.

In the case of a non-U.S. Holder, ML&Co. intends to withhold applicable United States withholding taxes at a rate of 30% on payments of interest made with respect to the Callable STRIDES subject to reduction by applicable treaty or upon the receipt of a Form W-8ECI from a non-U.S. Holder claiming that the payments are effectively connected with the conduct of a United States trade or business. Any capital gain realized upon the sale or other disposition of a Callable STRIDES by a non-U.S. Holder will generally not be subject to U.S. federal income tax if (i) that gain is not effectively connected with a United States trade or business of that non-U.S. Holder and (ii) in the case of an individual non-U.S. Holder, that individual is not present in the United States for 183 days or more in the taxable year of the sale or other disposition and that individual does not have a “tax home” (as defined for U.S. federal income tax purposes) in the United States.

A beneficial owner of a Callable STRIDES may be subject to information reporting with respect to certain amounts paid to the beneficial owner. A beneficial owner of a Callable STRIDES may also be subject to backup withholding at the applicable statutory rate of U.S. federal income tax on certain amounts paid to the beneficial owner unless such beneficial owner provides proof of an applicable exemption or a correct taxpayer identification number, and otherwise complies with applicable requirements of the backup withholding rules.

Any amounts withheld under the backup withholding rules from a payment to a beneficial owner would be allowed as a refund or a credit against such beneficial owner’s U.S. federal income tax provided the required information is furnished to the IRS.

Each fiduciary of a pension, profit-sharing or other employee benefit plan subject to the Employee Retirement Income Security Act of 1974, as amended (“ERISA”) (a “Plan”), should consider the fiduciary standards of ERISA in the context of the Plan’s particular circumstances before authorizing an investment in the Callable STRIDES. Accordingly, among other factors, the fiduciary should consider whether the investment would satisfy the prudence and diversification requirements of ERISA and would be consistent with the documents and instruments governing the Plan.

In addition, we and certain of our subsidiaries and affiliates, including MLPF&S, may be each considered a party in interest within the meaning of ERISA, or a disqualified person within the meaning of the Internal Revenue Code of 1986, as amended (the “Code”), with respect to many Plans, as well as many individual retirement accounts and Keogh plans (also “Plans”). Prohibited transactions within the meaning of ERISA or the Code would likely arise, for example, if the securities are acquired by or with the assets of a Plan with respect to which MLPF&S or any of its affiliates is a party in interest, unless the securities are acquired pursuant to an exemption from the prohibited transaction rules. A violation of these prohibited transaction rules could result in an excise tax or other liabilities under ERISA and/or Section 4975 of the Code for such persons, unless exemptive relief is available under an applicable statutory or administrative exemption.

Under ERISA and various prohibited transaction class exemptions (“PTCEs”) issued by the U.S. Department of Labor, exemptive relief may be available for direct or indirect prohibited transactions resulting from the purchase, holding or disposition of the securities. Those exemptions are PTCE 96-23 (for certain transactions determined by in-house asset managers), PTCE 95-60 (for certain transactions involving insurance company general accounts), PTCE 91-38 (for certain transactions involving bank collective investment funds), PTCE 90-1 (for certain transactions involving insurance company separate accounts), PTCE 84-14 (for certain transactions determined by independent qualified asset managers), and the exemption under new Section 408(b)(17) of ERISA and new Section 4975(d)(20) of the Code for certain arm’s-length transactions with a person that is a party in interest solely by reason of providing services to Plans or being an affiliate of such a service provider (the “Service Provider Exemption”).

Because we may be considered a party in interest with respect to many Plans, the securities may not be purchased, held or disposed of by any Plan, any entity whose underlying assets include plan assets by reason of any Plan’s investment in the entity (a “Plan Asset Entity”) or any person investing plan assets of any Plan, unless such purchase, holding or disposition is eligible for exemptive relief, including relief available under PTCE 96-23, 95-60, 91-38, 90-1, or 84-14 or the Service Provider Exemption, or such purchase, holding or disposition is otherwise not prohibited. Any purchaser, including any fiduciary purchasing on behalf of a Plan, transferee or holder of the securities will be deemed to have represented, in its corporate and its fiduciary capacity, by its purchase and holding of the securities that either (a) it is not a Plan or a Plan Asset Entity and is not purchasing such securities on behalf of or with plan assets of any Plan or with any assets of a governmental, church or foreign plan that is subject to any federal, state, local or foreign law that is substantially similar to the provisions of Section 406 of ERISA or Section 4975 of the Code or (b) its purchase, holding and disposition are eligible for exemptive relief or such purchase, holding and disposition are not prohibited by ERISA or Section 4975 of the Code (or in the case of a governmental, church or foreign plan, any substantially similar federal, state, local or foreign law).

Under ERISA, assets of a Plan may include assets held in the general account of an insurance company which has issued an insurance policy to such plan or assets of an entity in which the Plan has invested. Accordingly, insurance company general accounts that include assets of a Plan must ensure that one of the foregoing exemptions is available. Due to the complexity of these rules and the penalties that may be imposed upon persons involved in non-exempt prohibited transactions, it is particularly important that fiduciaries or other persons considering purchasing the securities on behalf of or with “plan assets” of any Plan consult with their counsel regarding the availability of exemptive relief under PTCE 96-23, 95-60, 91-38, 90-1 or 84-14 or the Service Provider Exemption.

Purchasers of the securities have exclusive responsibility for ensuring that their purchase, holding and disposition of the securities do not violate the prohibited transaction rules of ERISA or the Code or any similar regulations applicable to governmental or church plans, as described above.

The net proceeds from the sale of the Callable STRIDES will be used as described under “Use of Proceeds” in the accompanying general prospectus supplement and to hedge market risks of ML&Co. associated with its obligation in connection with the Callable STRIDES.

MLPF&S has advised ML&Co. that is proposed initially to offer all or part of the Callable STRIDES directly to the public on a fixed price basis at the offering prices set forth on the cover of this pricing supplement. After the initial public offering, the public offering prices may be changed. The obligations of MLPF&S are subject to certain conditions and it is committed to take and pay for all of the Callable STRIDES if any are taken.

The consolidated financial statements, the related financial statement schedule, and management’s report on the effectiveness of internal control over financial reporting incorporated in this pricing supplement by reference from Merrill Lynch & Co., Inc.’s Annual Report on Form 10-K for the year ended December 30, 2005 have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their reports, which are incorporated herein by reference, and have been so incorporated in reliance upon the reports of such firm given upon their authority as experts in accounting and auditing.

With respect to the unaudited interim condensed consolidated financial information for the three-month periods ended March 31, 2006 and April 1, 2005, the three-month and six-month periods ended June 30, 2006 and July 1, 2005 and the three-month and nine-month periods ended September 29, 2006 and September 30, 2005 which is incorporated herein by reference, Deloitte & Touche LLP, an independent registered public accounting firm, have applied limited procedures in accordance with the standards of the Public Company Accounting Oversight Board (United States) for reviews of such information. However, as stated in their reports included in Merrill Lynch & Co., Inc.’s Quarterly Reports on Form 10-Q for the quarters ended March 31, 2006, June 30, 2006 and September 29, 2006 and incorporated by reference herein, they did not audit and they do not express opinions on that interim financial information. Accordingly, the degree of reliance on their reports on such information should be restricted in light of the limited nature of the review procedures applied. Deloitte & Touche LLP are not subject to the liability provisions of Section 11 of the Securities Act of 1933 for their reports on the unaudited interim condensed consolidated financial information because those reports are not “reports” or a “part” of the registration statement prepared or certified by an accountant within the meaning of Sections 7 and 11 of the Act.

Capitalized terms used in this pricing supplement and not otherwise defined shall have the meanings ascribed to them in the accompanying MTN prospectus supplement, general prospectus supplement and prospectus, as applicable.

The Call Price is the amount of cash, per Callable STRIDES, that when discounted from the Call Date to the original issue date by a discount factor based on an annual yield to call of 10% (the midpoint of the range of 9% to 11%) and when added to the present value of all interest payments made through and including the applicable Call Date discounted to the original issue date by that same discount factor, will equal the original issue price.

As an example, the following steps describe the calculation of the Call Price for February 20, 2008:

The following table illustrates, for the scheduled interest payment dates and the scheduled Call Date listed, the:

“STock Return Income DEbt Securities” and “STRIDES” are service marks of Merrill Lynch & Co., Inc.


	Per Unit	Total
Public offering price (1)	$25.00	$
Underwriting discount	$ .50	$
Proceeds, before expenses, to Merrill Lynch & Co., Inc.	$24.50	$


		Page

SUMMARY INFORMATION—Q&A		PS-3
RISK FACTORS		PS-8
DESCRIPTION OF THE CALLABLE STRIDES		PS-12
THE DELIVERABLE SHARES		PS-24
UNITED STATES FEDERAL INCOME TAXATION		PS-26
ERISA CONSIDERATIONS		PS-30
USE OF PROCEEDS AND HEDGING		PS-31
SUPPLEMENTAL PLAN OF DISTRIBUTION		PS-31
EXPERTS		PS-31
INDEX OF CERTAIN DEFINED TERMS		PS-32
ANNEX A		A-1

Debt Securities, Warrants, Preferred Stock, Depositary Shares and Common Stock Prospectus Supplement (the “general prospectus supplement”)

MERRILL LYNCH & CO., INC		S-3
USE OF PROCEEDS		S-3
RATIO OF EARNINGS TO FIXED CHARGES AND RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS		S-4
THE SECURITIES		S-4
DESCRIPTION OF DEBT SECURITIES		S-5
DESCRIPTION OF DEBT WARRANTS		S-16
DESCRIPTION OF CURRENCY WARRANTS		S-18
DESCRIPTION OF INDEX WARRANTS		S-20
DESCRIPTION OF PREFERRED STOCK		S-25
DESCRIPTION OF DEPOSITARY SHARES		S-32
DESCRIPTION OF PREFERRED STOCK WARRANTS		S-36
DESCRIPTION OF COMMON STOCK		S-38
DESCRIPTION OF COMMON STOCK WARRANTS		S-42
PLAN OF DISTRIBUTION		S-44
WHERE YOU CAN FIND MORE INFORMATION		S-45
INCORPORATION OF INFORMATION WE FILE WITH THE SEC		S-46
EXPERTS		S-46

Prospectus

WHERE YOU CAN FIND MORE INFORMATION		2
INCORPORATION OF INFORMATION WE FILE WITH THE SEC		2
EXPERTS		2


• hypothetical original issue date:		February 19, 2007

• hypothetical initial Share Multiplier:		0.49885861 (based upon the Volume Weighted Average Price of the Deliverable Shares of $50.11 on the hypothetical Pricing Date of February 14, 2007)

• interest rate:		9% per year

• hypothetical interest payment dates:		On February 19, May 19, August 19, November 19 of each year, beginning May 19, 2007 (computed on the basis of a 360-day year of twelve 30-day months, compounded annually)

• hypothetical yield to call:		10%, the midpoint of the range between 9% and 11% (computed on the basis of a 360-day year of twelve 30-day months, compounded annually)

• hypothetical stated maturity date:		February 19, 2009


Hypothetical Call Date	Hypothetical Call Price per Callable STRIDES	Interest Payable on Call Date per Callable STRIDES	Final Amount per Callable STRIDES
February 20, 2008 (hypothetical first Call Date)	25.1677	0.0063	25.1740
August 15, 2008	25.2548	0.5375	25.7923
August 31, 2008	25.2625	0.0750	25.3375
September 14, 2008	25.2686	0.1563	25.4248
September 28, 2008	25.2755	0.2438	25.5193
October 15, 2008	25.2844	0.3500	25.6344
October 31, 2008	25.2932	0.4500	25.7432
November 15, 2008	25.3013	0.5375	25.8388
November 30, 2008	25.3087	0.0688	25.3775
December 17, 2008	25.3169	0.1750	25.4919
December 31, 2008	25.3241	0.2625	25.5866
January 15, 2008	25.3316	0.3500	25.6816
January 31, 2009	25.3406	0.4500	25.7906
February 19, 2009 (hypothetical stated maturity date)	25.3513	0.5625	25.9138


Hypothetical Closing Market Price of the Deliverable Shares on the maturity date	The product of the hypothetical Closing Market Price on the maturity date and the hypothetical initial Share Multiplier	Percentage change in the price of the Deliverable Shares from the hypothetical Pricing Date to the hypothetical maturity date	Value of Deliverable Shares due or amount payable on the Callable STRIDES on the maturity date(1)	Total annualized yield on the Callable STRIDES on the maturity date(2)	Total annualized yield from direct ownership of the Deliverable Shares(3)
10.02	5.00	–80.00%	5.56	–43.91%	–54.79%
15.03	7.50	–70.00%	8.06	–34.59%	–44.78%
20.05	10.00	–60.00%	10.56	–26.54%	–36.33%
25.06	12.50	–50.00%	13.06	–19.36%	–28.88%
30.07	15.00	–40.00%	15.56	–12.81%	–22.14%
35.08	17.50	–30.00%	18.06	–6.76%	–15.95%
40.09	20.00	–20.00%	20.56	–1.09%	–10.18%
45.10	22.50	–10.00%	23.06	4.25%	–4.77%
50.11(4)	25.00(5)	0.00%	25.56	9.31%	0.36%
51.12	25.50	2.00%	25.91	10.00%(6)	1.35%
52.12	26.00	4.00%	25.91	10.00%	2.33%
53.12	26.50	6.00%	25.91	10.00%	3.31%
54.12	27.00	8.00%	25.91	10.00%	4.27%
55.13	27.50	10.00%	25.91	10.00%	5.23%
60.14	30.00	20.00%	25.91	10.00%	9.88%
65.15	32.50	30.00%	25.91	10.00%	14.35%
70.16	35.00	40.00%	25.91	10.00%	18.64%

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Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents

Table of Contents


	High	Low
2002
First Quarter	35.83	29.00
Second Quarter	35.44	22.33
Third Quarter	24.87	12.33
Fourth Quarter	20.30	11.33

2003
First Quarter	20.82	15.77
Second Quarter	29.95	17.03
Third Quarter	36.07	26.41
Fourth Quarter	41.80	31.63

2004
First Quarter	36.70	30.10
Second Quarter	37.50	32.69
Third Quarter	36.68	29.25
Fourth Quarter	41.47	35.83

2005
First Quarter	40.48	33.91
Second Quarter	46.91	31.93
Third Quarter	53.17	40.40
Fourth Quarter	51.65	40.66

2006
First Quarter	57.69	43.32
Second Quarter	59.50	48.69
Third Quarter	56.12	43.51
Fourth Quarter	58.49	46.95

2007
First Quarter (through January 31, 2007)	51.80	48.01


		Page
accrued interest amount		PS-17
Business Day		PS-13
Call Date		PS-5
Call Price		PS-5
Closing Market Price		PS-19
Deliverable Shares		PS-3
ex-dividend date		PS-19
Exchange Property		PS-22
Extraordinary Dividend		PS-19
Extraordinary Dividend Amount		PS-19
Final Amount		PS-5
Market Disruption Event		PS-20
present value amount		PS-17
Pricing Date		PS-3
Redemption Date		PS-17
Redemption Price		PS-17
Reorganization Event		PS-22
Share Multiplier		PS-4
Trading Day		PS-13
Underlying Company		PS-3
Volume Weighted Average Price		PS-12


Date⁽²⁾	Interest Amount Payable	Years From Original Issue Date	Discount Factor⁽¹⁾ Based on the Yield to Call	Present Value at Original Issue Date of Interest Payments⁽³⁾
2/19/07		0.000000	1.000000
5/19/07	0.562500	0.250000	0.976454	0.549255
8/19/07	0.562500	0.500000	0.953463	0.536323
11/19/07	0.562500	0.750000	0.931012	0.523695
2/19/08	0.562500	1.000000	0.909091	0.511364
2/20/08	0.006250	1.002778	0.908850	0.005680

Sum of the present values of all interest payments:				2.126317


$22.874		= $25.17 (the Call Price)
0.9089		= $25.17 (the Call Price)


(1)	The discount factor is equal to	(	1	)	^X, where X is the number of years from the original issue date
(1)	The discount factor is equal to	(	1.10	)

	(computed on the basis of a 360-day year of twelve 30-day months compounded annually). The actual discount factor will be determined on the Pricing Date based upon the actual yield to call and will be disclosed in the final pricing supplement made available in connection with sales of the Callable STRIDES.

(2)	The dates in this column reflect the original issue date, the scheduled interest payment dates and February 20, 2008, the Call Date used in calculating this example. If a scheduled interest payment date falls on a day that is not a Business Day, payment will be made on the following Business Day, however, the present values of the interest payments will be calculated assuming each payment is made on the calendar day scheduled for that payment.

(3)	The present values in this column represent the product of the applicable interest payment amount and the corresponding discount factor. Due to rounding, the numbers in this column may not equal the sum of the present values of all interest payments.