UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 13F-NT

FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: March 31, 2011

Check here if Amendment [  ];          Amendment Number:______
This Amendment (Check only one.): [  ] is a restatement.
                                  [  ] adds new holdings entries.

Institutional Investment Manager Filing this Report:


Name:    State Street Research & Management Company
Address: One Financial Center
         Boston, MA 02111-2690


13F File Number: 028-04376


The institutional investment manager filing this report and the person by
whom it is signed hereby represent that the person signing the report is
authorized to submit it, that all information contained herein is true,
correct and complete, and that it is understood that all required items,
statements, schedules, and tables, are considered integral parts of this
form.

Person Signing this Report on Behalf of Reporting Manager:

Name:  Matthew J. Fitzgerald
Title: Attorney-In-Fact*
Phone: 415-670-2000

Signature, Place and Date of Signing:



___________________________________________________________________________
/s/ Matthew J. Fitzgerald    San Francisco, CA. 94105     April 18, 2011


Signed pursuant to Power Of Attorney dated
February 08, 2010, included as attachment
to this Form 13F-NT filed with the Securities
and Exchange Commission by State Street
Research & Management Company.




Report Type (Check only one.):

[ ]      13F HOLDINGS REPORT.

[X]      13F NOTICE.

[ ]      13F COMBINATION REPORT.


List of Other Managers Reporting for this Manager

Form 13F File Number    Name
--------------------    --------------------------
     028-12019          BlackRock, Inc.