SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* CAPITAL GROUP INTERNATIONAL INC (Last) (First) (Middle) CAPITAL GROUP INTERNATIONAL, INC 333 S. HOPE STREET (Street) LOS ANGELES CA 90071-1406 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 11/14/2007	3. Issuer Name and Ticker or Trading Symbol MSCI Inc. [ MXB ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Class B Common Stock	(1)(2)	(1)(2)	Class A Common Stock	2,861,235.21	(1)(2)	D

Explanation of Responses:

1. The Class B Common Stock is convertible at any time at the holder's option on a one-for-one basis into Class A Common Stock and has no expiration date. The Class B Common Stock is automatically converted into Class A Common Stock upon any sale by the reporting person to any party other than Capital Group International, Inc., or its subsidiaries or affiliates. Class B Common Stock generally has identical rights as Class A Common Stock, except that holders of Class A Common Stock are entitled to one vote per share while holders of Class B Common Stock are entitled to five votes per share on matters to be voted on by shareholders with certain exceptions.

2. Immediately after the pricing of the Issuer's initial public offering ("IPO") of its class A common stock, par value $.01 per share (the "Class A Common Stock"), the Issuer amended its certificate of incorporation. The amendment and restatement, among other things, (i) created two new classes of stock, the Class A Common Stock and the class B common stock, par value $.01 per share (the "Class B Common Stock"), which generally is convertible into Class A Common Stock on a one-for-one basis and (ii) reclassified each of the Issuer's then-outstanding shares of common stock, par value $1.00 per share (the "Common Stock") into 2,861.235208 shares of Class B Common Stock (the "Reclassification").

	Peter C. Kelly, Secretary	04/30/2008
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
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