Exhibit 31.1
SECTION 302 CERTIFICATION
I, Henry A. Fernandez, certify that:
| 1. | I have reviewed this Amendment No. 1 to the Quarterly Report on Form 10-Q/A of MSCI Inc.; and |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
Date: November 16, 2012
/s/ Henry A. Fernandez |
Henry A. Fernandez |
Chairman, CEO and President |
(Principal Executive Officer) |
