MCO Institutional Ownership
Top institutional (13F) holders of MCO and 5%+ (13D/G) positions, sourced from SEC EDGAR.
Institutional owners
64
Institutional value
$50.35B
Top holder
BERKSHIRE HATHAWAY INC
Top holders
| Holder | Stake | Filed | Value |
|---|---|---|---|
| BERKSHIRE HATHAWAY INCholding company | 14.3% | Aug 14, 2026 | $11.17B |
| TCI Fund Management Limitedholding company | 8.3% | Aug 14, 2026 | $6.49B |
| BlackRock, Inc.holding company | 7.2% | Aug 7, 2026 | $5.64B |
| Vanguard Capital Managementinvestment advisor | 5.7% | Aug 13, 2026 | $4.42B |
| STATE STREET CORPORATIONholding company | 4.1% | Sep 22, 2026 | $3.22B |
| FMR LLCinvestment advisor | 2.9% | Aug 13, 2026 | $2.26B |
| GEODE CAPITAL MANAGEMENT, LLCinvestment advisor | 2.4% | Nov 6, 2026 | $1.84B |
| Vanguard Portfolio Managementinvestment advisor | 2.2% | Aug 13, 2026 | $1.69B |
| MORGAN STANLEYholding company | 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 | $963.1M |
| Bank of New York Mellon Corpholding company | 1.1% | Nov 5, 2026 | $834.54M |
| NORTHERN TRUST CORPinvestment advisor | 1.0% | Aug 13, 2026 | $757.28M |
| Egerton Capital (UK) LLPinvestment advisor | 0.9% | Oct 20, 2026 | $743.52M |
| T. Rowe Price Associates, Inc.investment advisor | 0.9% | Aug 14, 2026 | $699.97M |
| Valley Forge Capital Management, LPinvestment advisor | 0.8% | Aug 14, 2026 | $596.58M |
| Massachusetts Financial Services Companyinvestment advisor | 0.7% | Aug 3, 2026 | $565.75M |
| Invesco Ltd.holding company | 0.7% | Aug 14, 2026 | $544.3M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCinvestment advisor | 0.7% | Aug 14, 2026 | $544.01M |
| Akre Capital Management, LLCinvestment advisor | 0.7% | Aug 14, 2026 | $523.98M |
| Dimensional Fund Advisors LPinvestment advisor | 0.7% | Nov 4, 2026 | $512.76M |
| AQR CAPITAL MANAGEMENT LLCinvestment advisor | 0.6% | Aug 14, 2026 | $471M |
| ROYAL BANK OF CANADAholding company | 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% | Oct 27, 2026 | $307.02M |
Never miss a MCO filing.
Get an email when MCO files its next 8-K, Form 4, 10-K or 10-Q with the SEC. Free, no account needed.
Free foreverNo account requiredOne-click unsubscribe
Source: SEC EDGAR Schedule 13D / 13G and 13F filings.