Form 8-A

MERRILL LYNCH & CO., INC.

(Registrant)

/s/ Judith A. Witterschein

Judith A. Witterschein

Secretary

The classes of securities registered hereby consist of (i) the Capital Securities (the “Capital Securities”) representing preferred undivided beneficial interests in the assets of Merrill Lynch Capital Trust I, a statutory trust formed under the laws of the State of Delaware (the “Trust”), and (ii) the Guarantee with respect thereto (the “Guarantee”) issued by Merrill Lynch & Co., Inc.

For a description of the Capital Securities and the Guarantee, reference is made to (a) the information set forth in the prospectus relating to the Capital Securities and the Guarantee contained in the Registration Statement on Form S-3 (Registration No. 333-132911) and Post-Effective Amendment No. 1 thereto filed with the Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the “Act”) (the “Registration Statement”), and (b) “Certain Terms of the Capital Securities” and “Certain Terms of the Guarantee” in the prospectus supplement dated December 7, 2006 covering the Capital Securities and Guarantee that was filed on December 11, 2006 pursuant to Rule 424(b) under the Act. The above mentioned descriptions contained in the Registration Statement, the prospectus and the prospectus supplement are incorporated herein by reference.


99 (A)		Junior Subordinated Indenture, dated as of December 14, 2006, between Merrill Lynch & Co., Inc. and The Bank of New York, as trustee, incorporated by reference to Exhibit 4(a) to Merrill Lynch & Co., Inc.’s filing on Form 8-K, filed on December 14, 2006.

99 (B)		First Supplemental Indenture, dated as of December 14, 2006, between Merrill Lynch & Co., Inc. and The Bank of New York, as trustee, incorporated by reference to Exhibit 4(b) to Merrill Lynch & Co., Inc.’s filing on Form 8-K, filed on December 14, 2006.

99 (C)		Certificate of Trust of Merrill Lynch Capital Trust I, incorporated by reference to Exhibit 4(b) to Post-Effective Amendment No. 1 to the Registration Statement.

99 (D)		Trust Agreement of Merrill Lynch Capital Trust I, incorporated by reference to Exhibit 4(c) to Post-Effective Amendment No. 1 to the Registration Statement.

99 (E)		Amended and Restated Trust Agreement of Merrill Lynch Capital Trust I, dated as of December 14, 2006, including form of Trust Preferred Security, incorporated by reference to Exhibit 4(e) to Merrill Lynch & Co., Inc.’s filing on Form 8-K, filed on December 14, 2006.

99 (F)		Guarantee Agreement, dated as of December 14, 2006, between Merrill Lynch & Co., Inc. and The Bank of New York, as Guarantee Trustee, incorporated by reference to Exhibit 4(f) Merrill Lynch & Co., Inc.’s filing on Form 8-K, filed on December 14, 2006.

99 (G)		Specimen Trust Preferred Security Certificate (included as part of Exhibit 99(E)).

Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized.


Delaware		Delaware
(State or other jurisdiction of incorporation or organization)		(State or other jurisdiction of incorporation or organization)

13-2740599		20-5981594
(I.R.S. employer identification number)		(I.R.S. employer identification number)

4 World Financial Center New York, New York		4 World Financial Center New York, New York
(Address of principal executive offices)		(Address of principal executive offices)

10080		10080
(Zip Code)		(Zip Code)

If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c), check the following box þ		If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d), check the following box ¨

Securities Act registration statement file numbers which this form relates: 333-132911, 333-132911-01

Securities to be registered pursuant to Section 12(b) of the Act:

Title of each class to be so registered		Name of each exchange on which each class is to be registered

Trust Preferred Securities of Merrill Lynch Capital Trust I (and the guarantees with respect thereto)		The New York Stock Exchange, Inc

Securities to be registered pursuant to Section 12(g) of the Act:

(None)


Merrill Lynch & Co., Inc.		Merrill Lynch Capital Trust I
(Exact name of registrant as specified in its charter)		(Exact name of registrant as specified in its charter)