Definitive Additional Materials



Washington, D.C. 20549


Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934


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¨       Definitive Proxy Statement

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x       Definitive Additional Materials


¨       Soliciting Material Pursuant to Section 240.14a-12



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*** Exercise Your Right to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Shareholder Meeting to Be Held on May 05, 2011




Meeting Information            



        MSCI INC.

        Meeting Type:  Annual Meeting    
           For holders as of:  March 10, 2011    


Date:  May 05, 2011



          Time: 2:30 PM EDT



Location:  One Chase Manhattan Plaza


 28th Floor




 New York, NY 10005







44th FLOOR

NEW YORK, NY 10005



You are receiving this communication because you hold shares in the above named company.



This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at or easily request a paper copy (see reverse side).



We encourage you to access and review all of the important information contained in the proxy materials before voting.



See the reverse side of this notice to obtain proxy 

materials and voting instructions.

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— Before You Vote —

How to Access the Proxy Materials


Proxy Materials Available to VIEW or RECEIVE:


1. Annual Report        2. Notice & Proxy Statement


How to View Online:

  Have the information that is printed in the box marked by the arrow   LOGO    (located on the following page) and visit:     

How to Request and Receive a PAPER or E-MAIL Copy:

  If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:     







3) BY E-MAIL*:

  *    If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow   LOGO    (located on the following page) in the subject line.     
  Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before April 21, 2011 to facilitate timely delivery.     

— How To Vote —

Please Choose One of the Following Voting Methods


Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.


Vote By Internet: To vote now by Internet, go to Have the information that is printed in the box


marked by the arrow   LOGO    available and follow the instructions.


Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.



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Voting Items   


The Board of Directors recommends you

vote FOR the following:






Election of Directors


  The Board of Directors recommends you vote 1 YEAR on the following proposal:      

Benjamin F. duPont


To recommend, by non-binding vote, the frequency of executive compensation votes.


HenryA. Fernandez


Alice W. Handy

  The Board of Directors recommends you vote FOR the following proposal:      
04   Catherine R. Kinney   4    

To ratify the appointment of Deloitte & Touche LLP as independent auditor

05   Linda H. Riefler   NOTE: Such other business as may properly come before the meeting or any adjournment thereof.      
06   George W. Siguler          
07   Scott M. Sipprelle          

Patrick Tierney

09   Rodolphe M. Vallee          

The Board of Directors recommends you

vote FOR the following proposal:


To approve, by non-binding vote,

executive compensation as described in

these proxy materials.


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