MSCI Inc. (MSCI) Institutional Ownership

Ownership Summary

Recent 13F filings as of September 2025 show that 1015 institutional investors hold a position in MSCI Inc. (NYSE:MSCI).

• These investors collectively held 87.9% of the company's total shares outstanding in September 2025, down from 91.8% in June 2025.
• Quarterly data indicates a -2.07% shift in institutional share volume, and the annual owner count reflects an increase of 3.15%.
• During the quarter, 431 institutions bought more MSCI shares, 422 sold shares, and 162 of the 1015 total investors held their position steady.
• This class of investors decreased its holdings in MSCI to 67.99Mn shares for the 13F-cycle ending September 2025, down by 1.43Mn shares quarter on quarter, and down 1.19Mn shares year over year.
• VANGUARD GROUP INC's holding of 9.67Mn shares as of September 30, 2025 makes it the primary institutional investor in MSCI, owning 12.50% of the stock.
• Among the most significant buyers of MSCI during September 2025 were MORGAN STANLEY (1.32Mn), Mitsubishi UFJ Asset Management Co., Ltd. (728.90K), Longview Partners (Guernsey) LTD (687.77K), BAILLIE GIFFORD & CO (331.04K), T. Rowe Price Investment Management, Inc. (319.35K).
• Leading sellers of MSCI stock in September 2025 included TWO SIGMA ADVISERS, LP (562.80K), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (506.89K), MILLENNIUM MANAGEMENT LLC (364.40K), MACKENZIE FINANCIAL CORP (347.50K), Qube Research & Technologies Ltd (339.51K).
• The top 10 institutional holders of MSCI for the quarter ending September 2025 included VANGUARD GROUP INC (9.67Mn), BlackRock, Inc. (5.87Mn), STATE STREET CORP (3.32Mn), MORGAN STANLEY (2.42Mn), BAMCO INC /NY/ (2.39Mn), GEODE CAPITAL MANAGEMENT, LLC (2.02Mn), EDGEWOOD MANAGEMENT LLC (1.91Mn), PRINCIPAL FINANCIAL GROUP INC (1.78Mn), POLEN CAPITAL MANAGEMENT LLC (1.58Mn), T. Rowe Price Investment Management, Inc. (1.28Mn).