Exhibit 15 To the Board of Directors and Shareholders of Morgan Stanley: We have made a review, in accordance with standards established by the American Institute of Certified Public Accountants, of the unaudited interim condensed consolidated financial information of Morgan Stanley and subsidiaries as of August 31, 2002 and for the three-month and nine-month periods ended August 31, 2002 and 2001, as indicated in our report dated October 14, 2002, except for Note 11, as to which the date is November 1, 2002; because we did not perform an audit, we expressed no opinion on that information. We are aware that our report, which is included in your Quarterly Report on Form 10-Q/A for the quarter ended August 31, 2002, is incorporated by reference in the following Registration Statements: Filed on Form S-3: Registration Statement No. 33-57202 Registration Statement No. 33-60734 Registration Statement No. 33-89748 Registration Statement No. 33-92172 Registration Statement No. 333-07947 Registration Statement No. 333-22409 Registration Statement No. 333-27881 Registration Statement No. 333-27893 Registration Statement No. 333-27919 Registration Statement No. 333-46403 Registration Statement No. 333-46935 Registration Statement No. 333-76111 Registration Statement No. 333-75289 Registration Statement No. 333-34392 Registration Statement No. 333-47576 Registration Statement No. 333-83616 Filed on Form S-4: Registration Statement No. 333-25003 Filed on Form S-8: Registration Statement No. 33-62374 Registration Statement No. 33-63024 Registration Statement No. 33-63026 Registration Statement No. 33-78038 Registration Statement No. 33-79516 Registration Statement No. 33-82240 Registration Statement No. 33-82242 Registration Statement No. 33-82244 Registration Statement No. 333-04212 Registration Statement No. 333-28141 Registration Statement No. 333-25003 Registration Statement No. 333-28263 Registration Statement No. 333-62869 Registration Statement No. 333-78081 Registration Statement No. 333-95303 Registration Statement No. 333-55972 Registration Statement No. 333-85148 Registration Statement No. 333-85150 We are also aware that the aforementioned report, pursuant to Rule 436(c) under the Securities Act of 1933, is not considered a part of the Registration Statement prepared or certified by an accountant or a report prepared or certified by an accountant within the meaning of Sections 7 and 11 of that Act. /s/ Deloitte & Touche LLP New York, New York November 1, 2002