Citable ownership snapshot
MCO's latest 13F holder table lists Berkshire Hathaway as the largest holder in this view with 24,669,778 shares valued at $11.17B.
| Holder | Report date | Value | Portfolio weight |
|---|---|---|---|
| Berkshire Hathaway | Jun 30, 2026 | $11.17B | 3.7% |
| TCI Fund Management | Jun 30, 2026 | $6.49B | 12.3% |
| Valley Forge Capital | Jun 30, 2026 | $596.58M | 19.1% |
| Akre Capital Management | Jun 30, 2026 | $523.98M | 10.2% |
| AQR Capital Management | Jun 30, 2026 | $471.00M | 0.2% |
| D.E. Shaw & Co. | Jun 30, 2026 | $167.18M | 0.1% |
| AltaRock Partners | Jun 30, 2026 | $137.06M | 3.2% |
| Citadel Advisors | Jun 30, 2026 | $112.37M | 0.0% |
Source: SEC EDGAR 13F filings; period Jun 30, 2026; filed Aug 14, 2026.
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