MCO Institutional Ownership
Top institutional (13F) holders of MCO and activist (13D/G) positions, sourced from SEC EDGAR.
Institutional owners
47
Institutional value
$41.50B
Top holder
BERKSHIRE HATHAWAY INC
Top holders
| Holder | Stake | Filed | Value |
|---|---|---|---|
| BERKSHIRE HATHAWAY INCinvestment advisor | 14.2% | Aug 14, 2026 | $11.17B |
| BlackRock, Inc.holding company | 7.2% | Aug 7, 2026 | $5.64B |
| Vanguard Capital Managementinvestment advisor | 5.6% | Aug 13, 2026 | $4.42B |
| STATE STREET CORPORATIONinvestment advisor | 4.1% | Aug 7, 2026 | $3.22B |
| FMR LLCinvestment advisor | 2.9% | Aug 13, 2026 | $2.26B |
| GEODE CAPITAL MANAGEMENT, LLCinvestment advisor | 2.3% | Aug 12, 2026 | $1.81B |
| Vanguard Portfolio Managementinvestment advisor | 2.1% | Aug 13, 2026 | $1.69B |
| MORGAN STANLEYinvestment advisor | 1.4% | Aug 13, 2026 | $1.08B |
| Norges Bankother | 1.4% | Aug 12, 2026 | $1.07B |
| GOLDMAN SACHS GROUP INCinvestment advisor | 1.2% | Aug 14, 2026 | $963.10M |
| Bank of New York Mellon Corpholding company | 1.2% | Aug 6, 2026 | $914.72M |
| NORTHERN TRUST CORPinvestment advisor | 1.0% | Aug 13, 2026 | $757.28M |
| T. Rowe Price Associates, Inc.investment advisor | 0.9% | Aug 14, 2026 | $699.97M |
| Massachusetts Financial Services Companyinvestment advisor | 0.7% | Aug 3, 2026 | $565.75M |
| Invesco Ltd.investment advisor | 0.7% | Aug 14, 2026 | $544.30M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCinvestment advisor | 0.7% | Aug 14, 2026 | $544.01M |
| Dimensional Fund Advisors LPinvestment advisor | 0.6% | Aug 11, 2026 | $484.99M |
| AQR CAPITAL MANAGEMENT LLCinvestment advisor | 0.6% | Aug 14, 2026 | $471.00M |
| ROYAL BANK OF CANADAinvestment advisor | 0.5% | Aug 14, 2026 | $370.92M |
| BAILLIE GIFFORD & COinvestment advisor | 0.4% | Aug 6, 2026 | $325.14M |
| Neuberger Berman Group LLCinvestment advisor | 0.4% | Aug 13, 2026 | $307.02M |
| BANK OF AMERICA CORP /DE/investment advisor | 0.4% | Aug 14, 2026 | $291.21M |
| JPMORGAN CHASE & COinvestment advisor | 0.3% | Aug 12, 2026 | $244.17M |
| D. E. Shaw & Co., Inc.investment advisor | 0.2% | Aug 14, 2026 | $167.18M |
| CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEMinvestment advisor | 0.2% | Aug 14, 2026 | $150.76M |
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Source: SEC EDGAR Schedule 13D / 13G and 13F filings.