Who owns Marsh & McLennan Companies?What is institutional ownership? Institutional ownership is the share of a company's stock held by funds, banks and other investment managers, as they report it each quarter on Form 13F.
Institutions own 91.6% of Marsh & McLennan Companies's shares, through 1,533 funds, banks and other managers that report their holdings to the SEC; individual investors and others hold the rest. The largest on 30 June 2026 were BlackRock, Inc. (8.2%), Vanguard Capital Management LLC (6.5%), State Street Corp (4.6%).
- Institutions ownWhat is institutional ownership? Institutional ownership is the share of a company's stock held by funds, banks and other investment managers, as they report it each quarter on Form 13F.
- 91.6%
- Institutional holders
- 1,533
- The 10 largest hold
- 40.4%
- Free floatWhat is free float? Free float is the part of a company's shares that anyone can buy and sell: all its shares minus those held by insiders, founders and owners of over 5%.
- 99.5%
- Holdings as of
- 30 Jun 2026
Who owns the shares
Shares free to trade
Closely held shares belong to insiders, founders and owners of more than 5%, and seldom change hands. The free float is the rest: the shares anyone can buy and sell.
The largest shareholders
| # | Holder | Shares | Of the company | Value | Change last quarter (shares) |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 39,502,046 | 8.20% | 6.58B USD | -2,559,630 |
| 2 | Vanguard Capital Management LLC | 31,472,575 | 6.53% | 5.25B USD | +4,901 |
| 3 | State Street Corp | 22,401,676 | 4.65% | 3.73B USD | +330,731 |
| 4 | Capital World Investors | 18,122,340 | 3.76% | 3.02B USD | +153,158 |
| 5 | Wellington Management Group LLP | 16,975,238 | 3.52% | 2.83B USD | -395,471 |
| 6 | Capital International Investors | 15,729,457 | 3.26% | 2.62B USD | +15,604 |
| 7 | Geode Capital Management, LLC | 13,510,274 | 2.80% | 2.25B USD | +106,102 |
| 8 | Price T Rowe Associates Inc | 13,438,662 | 2.79% | 2.24B USD | +2,462,376 |
| 9 | Vanguard Portfolio Management LLC | 12,570,512 | 2.61% | 2.10B USD | +142,566 |
| 10 | Capital Research Global Investors | 10,973,649 | 2.28% | 1.83B USD | -327,539 |
| 11 | Harris Associates L P | 8,687,496 | 1.80% | 1.45B USD | +3,518,377 |
| 12 | Artisan Partners Limited Partnership | 7,269,246 | 1.51% | 1.21B USD | +2,393,389 |
| 13 | FMR LLC | 6,954,123 | 1.44% | 1.16B USD | -3,226,582 |
| 14 | Massachusetts Financial Services Co | 6,507,415 | 1.35% | 1.09B USD | -1,692,894 |
| 15 | Morgan Stanley | 6,314,085 | 1.31% | 1.05B USD | -159,907 |
| 16 | Norges Bank | 6,255,525 | 1.30% | 1.04B USD | New position |
| 17 | Ameriprise Financial Inc | 5,535,138 | 1.15% | 922.15M USD | +46,601 |
| 18 | Northern Trust Corp | 4,888,165 | 1.01% | 814.71M USD | -76,914 |
| 19 | JPMorgan Chase & Co | 4,730,329 | 0.98% | 788.59M USD | -1,363,063 |
| 20 | Clearbridge Investments, LLC | 4,705,966 | 0.98% | 784.32M USD | -1,717,565 |
| 21 | UBS AM | 4,597,647 | 0.95% | 766.29M USD | -584,870 |
| 22 | Invesco Ltd. | 4,305,773 | 0.89% | 717.64M USD | +420,995 |
| 23 | Goldman Sachs Group Inc | 4,228,626 | 0.88% | 704.79M USD | +555,667 |
| 24 | Arrowstreet Capital, Limited Partnership | 4,170,110 | 0.87% | 695.03M USD | +715,524 |
| 25 | Deutsche Bank Ag\ | 4,113,644 | 0.85% | 685.62M USD | +409,470 |
Famous investors who own Marsh & McLennan Companies
| Investor | Of their portfolio | Shares | Value | Last quarter |
|---|---|---|---|---|
| Bill NygrenHarris Associates · Q2 2026 | 1.92% | 8,687,496 | 1.45B USD | +68.1%Added |
| Norway's Sovereign Wealth FundQ2 2026 | 0.10% | 6,255,525 | 1.04B USD | -25.4%Reduced |
| Saudi Central BankQ3 2026 | 0.08% | 49,338 | 8.42M USD | +46.3%Added |
| Ray DalioBridgewater Associates · Q2 2026 | 0.01% | 17,949 | 2.99M USD | New |
| Renaissance TechnologiesQ3 2026 | 0.01% | 46,300 | 7.90M USD | New |
| Ken GriffinCitadel · Q2 2026 | <0.01% | 230,808 | 38.47M USD | -71.9%Reduced |
| TemasekQ3 2026 | — | — | — | Sold out |
From each fund's newest 13F filing with the SEC; a fund's quarter can be newer or older than another's.All famous investors' portfolios
Congress trades in Marsh & McLennan Companies
Over the last 12 months, 1 members bought it (4 trades) and 4 sold it (9 trades).
| Member | Trade | Owner | Amount | Traded | Disclosed | Since the trade | Report |
|---|---|---|---|---|---|---|---|
| RKevin HernRepresentative for Oklahoma's 1st district | Sold all | Joint | $50,001 - $100,000 | 23 Sept 2026 | 13 Oct 202620 days later | +21.9% | |
| RKevin HernRepresentative for Oklahoma's 1st district | Sold part | Joint | $50,001 - $100,000 | 17 Sept 2026 | 13 Oct 202626 days later | +19.0% | |
| RKevin HernRepresentative for Oklahoma's 1st district | Sold | Joint | $1,001 - $15,000 | 14 Sept 2026 | 28 Sept 202614 days later | +15.1% | |
| RKevin HernRepresentative for Oklahoma's 1st district | Sold | Joint | $100,001 - $250,000 | 9 Sept 2026 | 28 Sept 202619 days later | +17.4% | |
| RKevin HernRepresentative for Oklahoma's 1st district | Sold | Joint | $1,001 - $15,000 | 2 Sept 2026 | 28 Sept 202626 days later | +10.6% | |
| RKevin HernRepresentative for Oklahoma's 1st district | Sold all | Joint | $1,001 - $15,000 | 24 Aug 2026 | 2 Sept 20269 days later | +6.7% | |
| DRo KhannaRepresentative for California's 17th district | Bought | Child | $1,001 - $15,000 | 2 Jun 2026 | 8 Jul 202636 days later | +28.7% | |
| DRo KhannaRepresentative for California's 17th district | Bought | Child | $1,001 - $15,000 | 1 May 2026 | 11 Jun 202641 days later | +25.0% | |
| DRo KhannaRepresentative for California's 17th district | Bought | Spouse | $1,001 - $15,000 | 13 Apr 2026 | 13 May 202630 days later | +19.7% | |
| RAlan ArmstrongSenator for Oklahoma | Sold all | Self | $1,001 - $15,000 | 27 Mar 2026 | 21 Jul 2026116 days later | +22.8% | |
| DRo KhannaRepresentative for California's 17th district | Sold | Spouse | $1,001 - $15,000 | 29 Jan 2026 | 10 Feb 202612 days later | +10.5% | |
| DTina SmithSenator for Minnesota | Sold | Spouse | $50,001 - $100,000 | 27 Jan 2026 | 30 Jan 20263 days later | +15.9% | |
| DRo KhannaRepresentative for California's 17th district | Bought | Spouse | $15,001 - $50,000 | 13 Jan 2026 | 10 Feb 202628 days later | +13.7% |
Members of Congress must report a trade over $1,000 within 45 days, its amount as a range. A trade by a spouse or child is theirs to report too. The move since the trade is from the close on the day traded to the price now.All Congress stock trades
All institutions last quarter
- Bought or added
- 770 · 140 new
- Sold or cut
- 852 · 190 sold out
- Net shares bought
- +2.55M · 424.85M USD
- Institutional ownership
- 90.7% → 91.6%
Biggest buyers last quarter
- Norges BankNew position
- Edgepoint Investment Group Inc.New position
- Harris Associates L P+3,518,377
- Sixth Street Partners Management Company, L.P.New position
- Price T Rowe Associates Inc+2,462,376
Biggest sellers last quarter
- FMR LLC-3,226,582
- BlackRock, Inc.-2,559,630
- Clearbridge Investments, LLC-1,717,565
- Massachusetts Financial Services Co-1,692,894
- Mawer Investment Management Ltd.-1,604,431
From the holders' 13F filings with the SEC for the quarter to 30 Jun 2026, filed up to 45 days after it; the buyers and sellers are among the 100 largest holders.
Common questions about Marsh & McLennan Companies's shareholders
Source: Financial Modeling PrepVerified against SEC filings
