Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent
to the incorporation by reference in this Amendment No. 1 to Registration Statement on Form S-4 of our
reports dated February 26, 2007, relating to the consolidated financial statements of Merrill Lynch
& Co., Inc. and subsidiaries (which report expressed an unqualified opinion and included an
explanatory paragraph regarding the change in accounting method in 2006 for share-based payments to
conform to Statement of Financial Accounting Standards (SFAS) No. 123 (revised 2004), Share-Based
Payment), and managements report on the effectiveness of internal control over financial reporting
appearing in the Annual Report on Form 10-K of Merrill Lynch & Co., Inc. and subsidiaries for the
year ended December 29, 2006 and to the reference to us under the heading Experts in the proxy
statement/prospectus, which is part of this Amendment No. 1 to Registration Statement.
/s/ Deloitte & Touche LLP
New York, New York
June 8, 2007