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SHAREHOLDERS' EQUITY (DEFICIT)
 6 Months Ended
Jun. 30, 2026
Equity [Abstract]  
SHAREHOLDERS' EQUITY (DEFICIT) SHAREHOLDERS’ EQUITY (DEFICIT)
This note reflects the share repurchases and related activity as well as share-based compensation activity recognized by the Company for all periods referenced.
Stock Repurchase Program
On October 25, 2025, the Board of Directors authorized a new stock repurchase program (the “2025 Repurchase Program”) for the repurchase of up to an aggregate of $3.0 billion worth of shares of MSCI’s common stock, which superseded and replaced the previously existing share repurchase program.
Share repurchases made pursuant to the 2025 Repurchase Program may take place in the open market or in privately negotiated transactions from time to time based on market and other conditions. This authorization may be modified, suspended or terminated by the Board of Directors at any time without prior notice.
As of June 30, 2026, there was $1.6 billion of available authorization remaining under the 2025 Repurchase Program.
The following table provides information with respect to repurchases of the Company’s common stock made on the open market:
Six months ended
(in millions, except per share data)
Average Price
Paid Per Share		Total Number of
Shares Repurchased
Dollar Value of
Shares Repurchased1
June 30, 2026$558 1.0 $544.3 
June 30, 2025$558 0.5 $286.6 
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1    The values in this column exclude the 1% excise tax incurred on share repurchases pursuant to the Inflation Reduction Act. Any excise tax incurred is recognized as part of the cost of the shares acquired in the Unaudited Condensed Consolidated Statements of Shareholders’ Equity (Deficit).
Common Stock Dividends
The following table presents dividends declared per common share as well as total amounts declared for the periods indicated:

    
Dividends Declared

(in millions, except per share data)		Per ShareTotal Amount
2026
Three Months Ended March 31,$2.05 $148.9 
Three Months Ended June 30,2.05 150.0 
Total$4.10 $298.9 
2025
Three Months Ended March 31,$1.80 $141.4 
Three Months Ended June 30,1.80 140.0 
Total$3.60 $281.4 
Common Stock
The following table presents activity related to shares of common stock issued and repurchased during the six months ended June 30, 2026:
Common StockTreasury Common Stock
(in millions)IssuedStockOutstanding
Balance at December 31, 2025
134.4(60.8)73.6
Dividend payable/paid———
Common stock issued and exercise of stock options———
Shares withheld for tax withholding ———
Shares repurchased under stock repurchase programs—(0.7)(0.7)
Shares issued to directors———
Balance at March 31, 2026
134.4(61.5)72.9
Dividend payable/paid———
Common stock issued and exercise of stock options0.1—0.1
Shares withheld for tax withholding ———
Shares repurchased under stock repurchase programs—(0.3)(0.3)
Shares issued to directors———
Balance at June 30, 2026
134.5(61.8)72.7