Who owns MARSH & MCLENNAN COMPANIES, INC.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of MRSH from SEC Form 13F filings across 1,497 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 1,497 institutions disclosed 438.3M shares of MARSH & MCLENNAN COMPANIES, INC. worth $73.07B — about 91.3% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
1,497
13F holders
$73.07B
value, 2026 filers
91.3%
of shares outstanding (438.3M sh)
168
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of MRSH's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 39.5M | $6.58B | 0.1% | 8.2% | -6.1% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | 31.5M | $5.25B | 0.1% | 6.6% | 0.0% |
| 3 | STATE STREET CORP | 22.4M | $3.73B | 0.1% | 4.7% | +1.5% |
| 4 | Capital World Investors | 18.1M | $3.02B | 0.4% | 3.8% | +0.9% |
| 5 | WELLINGTON MANAGEMENT GROUP LLP | 17.0M | $2.83B | 0.5% | 3.5% | -2.3% |
| 6 | Capital International Investors | 15.7M | $2.62B | 0.5% | 3.3% | +0.1% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 13.5M | $2.25B | 0.1% | 2.8% | +0.8% |
| 8 | PRICE T ROWE ASSOCIATES INC /MD/ | 13.4M | $2.24B | 0.2% | 2.8% | +22.4% |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 12.6M | $2.10B | 0.1% | 2.6% | +1.1% |
| 10 | Capital Research Global Investors | 11.0M | $1.83B | 0.3% | 2.3% | -2.9% |
| 11 | HARRIS ASSOCIATES L P | 8.7M | $1.45B | 1.9% | 1.8% | +68.1% |
| 12 | Artisan Partners Limited Partnership | 7.3M | $1.21B | 1.9% | 1.5% | +49.1% |
| 13 | FMR LLC | 7.0M | $1.16B | 0.1% | 1.4% | -31.7% |
| 14 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 6.5M | $1.09B | 0.3% | 1.4% | -20.6% |
| 15 | MORGAN STANLEY | 6.3M | $1.05B | 0.1% | 1.3% | -2.5% |
| 16 | NORGES BANKNEW | 6.3M | $1.04B | 0.1% | 1.3% | new |
| 17 | AMERIPRISE FINANCIAL INC | 5.5M | $922.1M | 0.2% | 1.2% | +0.8% |
| 18 | NORTHERN TRUST CORP | 4.9M | $814.7M | 0.1% | 1% | -1.5% |
| 19 | JPMORGAN CHASE & CO | 4.7M | $788.6M | 0.0% | 1% | -22.4% |
| 20 | Clearbridge Investments, LLC | 4.7M | $784.3M | 0.6% | 1% | -26.7% |
| 21 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 4.6M | $766.3M | 0.1% | 1% | -11.3% |
| 22 | Invesco Ltd. | 4.3M | $717.6M | 0.1% | 0.9% | +10.8% |
| 23 | GOLDMAN SACHS GROUP INC | 4.2M | $704.8M | 0.1% | 0.9% | +15.1% |
| 24 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 4.2M | $695.0M | 0.3% | 0.9% | +20.7% |
| 25 | DEUTSCHE BANK AG\ | 4.1M | $685.6M | 0.2% | 0.9% | +11.1% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.