Morgan Stanley (NYSE: MS) and MSCI Inc. (NYSE: MXB) announced today that Morgan Stanley is commencing a secondary offering of all of its remaining MSCI Inc. shares.  The offering will consist of 27,708,653 shares of MSCI Inc. class A common stock, par value $0.01 per share.  MSCI Inc. will not receive any of the proceeds from the sale of the class A common stock. 

Morgan Stanley is serving as sole book-running manager for the offering.  A preliminary prospectus supplement and accompanying base prospectus relating to the offering have been filed with the U.S. Securities and Exchange Commission and are available on its website, www.sec.gov.

This press release does not constitute an offer to sell or a solicitation of an offer to buy any securities.  A registration statement relating to these securities has been filed and is effective.  The offering will be made only by means of a prospectus supplement and accompanying base prospectus, copies of which may be obtained from:

Morgan Stanley & Co. Incorporated
180 Varick Street
New York, New York 10014
Attention: Prospectus Department
E-mail: prospectus@morganstanley.com

About MSCI Inc.
MSCI Inc. is a leading provider of investment decision support tools to investment institutions worldwide.  MSCI Inc. products include indices and portfolio risk and performance analytics for use in managing equity, fixed income and multi-asset class portfolios.
 
The company's flagship products are the MSCI International Equity Indices, which include over 120,000 indices calculated daily across more than 70 countries, and the Barra risk models and portfolio analytics, which cover 59 equity and 48 fixed income markets.  MSCI Inc. is headquartered in New York, with research and commercial offices around the world.  Morgan Stanley, a global financial services firm, is the controlling shareholder of MSCI Inc.

Contacts:
Morgan Stanley, Media Relations, Mary Claire Delaney, 212 762 6880
MSCI Inc., Lisa Monaco, 866 447 7874