Who Owns MARSH & MCLENNAN COS INC (MMC)? -- Institutional Holders (2026-06-30)
785 institutions reported holding $6.89B of MARSH & MCLENNAN COS INC (MMC) in SEC 13F filings for 2026-06-30. Largest institutional holders: MASSACHUSETTS FINANCIAL SERVICES CO /MA/ ($1.09B), Ninety One UK Ltd ($661.9M), PARNASSUS INVESTMENTS, LLC ($341.3M), Rathbones Group PLC ($288.8M), NIPPON LIFE INSURANCE CO ($218.6M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $1.09B | 6.5M | Trimmed |
| 2 | Ninety One UK Ltd | $661.9M | 4.0M | Trimmed |
| 3 | PARNASSUS INVESTMENTS, LLC | $341.3M | 2.0M | Trimmed |
| 4 | Rathbones Group PLC | $288.8M | 1.7M | Added |
| 5 | NIPPON LIFE INSURANCE CO | $218.6M | 1.3M | Hold |
| 6 | Swedbank AB | $216.9M | 1.3M | Added |
| 7 | Sumitomo Mitsui Trust Group, Inc. | $183.4M | 1.1M | Added |
| 8 | ENVESTNET ASSET MANAGEMENT INC | $166.4M | 998,086 | Trimmed |
| 9 | Robeco Institutional Asset Management B.V. | $151.1M | 906,861 | Added |
| 10 | TD Asset Management Inc | $133.4M | 800,370 | Trimmed |
| 11 | Markel Group Inc. | $127.3M | 763,500 | Hold |
| 12 | JENNISON ASSOCIATES LLC | $113.9M | 683,273 | Added |
| 13 | Assenagon Asset Management S.A. | $109.1M | 654,434 | Added |
| 14 | Cryder Capital Partners LLP | $108.2M | 649,418 | Added |
| 15 | DAVENPORT & Co LLC | $102.0M | 612,045 | Trimmed |
| 16 | PRINCIPAL FINANCIAL GROUP INC | $100.8M | 604,724 | Trimmed |
| 17 | CITIGROUP INC | $95.1M | 570,878 | Added |
| 18 | NEW YORK STATE COMMON RETIREMENT FUND | $85.9M | 515,312 | Trimmed |
| 19 | Pictet Asset Management Holding SA | $85.8M | 514,868 | Added |
| 20 | JOHNSON INVESTMENT COUNSEL INC | $79.7M | 478,020 | Trimmed |
| 21 | Munich Reinsurance Co Stock Corp in Munich | $76.8M | 460,618 | Hold |
| 22 | Boston Partners | $76.4M | 457,791 | New |
| 23 | Birch Hill Investment Advisors LLC | $68.4M | 410,233 | Trimmed |
| 24 | Focused Investors LLC | $67.4M | 404,300 | New |
| 25 | Aberdeen Group plc | $65.7M | 394,418 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30