MARSH & MCLENNAN COS (MRSH): Institutional Ownership
Hedge funds and institutional managers reporting a position in MRSH · Financials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
33
13F filers
Aggregate Value
$1.8B
Across holders
Last Price
$169.03
2026-06-26
Sector
Financials
GICS
Holder activity9 new8 added16 reduced
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| HARRIS ASSOCIATES L P CIK 0000813917 | Institutional Manager | 5.09M | $882.7M | 49.9% | 1.2% | New | — | Q1 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 732K | $135.9M | 7.7% | 0.1% | New | — | Q4 2025 |
| MARKEL CORP (MKL) CIK 0001096343 | Hedge Fund | 743K | $128.9M | 7.3% | 1.1% | Added | +$304K | Q1 2026 |
| PRIMECAP MANAGEMENT CO/CA/ CIK 0000763212 | Institutional Manager | 718K | $124.5M | 7.0% | 0.1% | Added | +$34.6M | Q1 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 677K | $117.4M | 6.6% | 0.1% | Reduced | $-99.4M | Q1 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 366K | $63.4M | 3.6% | 0.1% | Reduced | $-5.6M | Q1 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 0001165408 | Hedge Fund | 354K | $61.3M | 3.5% | 0.1% | New | — | Q1 2026 |
| EMINENCE CAPITAL LLC CIK 0001107310 | Hedge Fund | 320K | $55.6M | 3.1% | 1.3% | New | — | Q1 2026 |
| Man Group plc CIK 0001637460 | Hedge Fund | 294K | $51.0M | 2.9% | 0.1% | Added | +$47.3M | Q1 2026 |
| Gotham Asset Management, LLC CIK 0001510387 | Hedge Fund | 205K | $35.5M | 2.0% | 0.1% | Reduced | $-6.4M | Q1 2026 |
| Holocene Advisors, LP CIK 0001700574 | Hedge Fund | 203K | $35.3M | 2.0% | 0.1% | Reduced | $-272K | Q1 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 136K | $23.7M | 1.3% | 0.0% | Added | +$22.4M | Q1 2026 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 70K | $12.2M | 0.7% | 0.0% | Reduced | $-5.5M | Q1 2026 |
| BAILLIE GIFFORD & CO CIK 0001088875 | Institutional Manager | 48K | $8.3M | 0.5% | 0.0% | Added | +$8.3M | Q1 2026 |
| Eisler Capital (UK) Ltd. CIK 0001849486 | Hedge Fund | 27K | $5.9M | 0.3% | 0.0% | Added | +$898K | Q3 2024 |
| Schonfeld Strategic Advisors LLC CIK 0001665241 | Hedge Fund | 29K | $5.4M | 0.3% | 0.0% | New | — | Q4 2025 |
| Bridgewater Associates, LP CIK 0001350694 | Hedge Fund | 26K | $4.8M | 0.3% | 0.0% | Reduced | $-6.7M | Q4 2025 |
| GAMCO INVESTORS, INC. ET AL CIK 0000807249 | Institutional Manager | 20K | $3.4M | 0.2% | 0.0% | Added | +$53K | Q1 2026 |
| YACKTMAN ASSET MANAGEMENT CO/IL CIK 0000905567 | Institutional Manager | 19K | $3.4M | 0.2% | 0.0% | Added | +$17K | Q1 2026 |
| Brevan Howard Capital Management LP CIK 0001512857 | Hedge Fund | 13K | $2.3M | 0.1% | 0.0% | Reduced | $-4.3M | Q1 2026 |
New
Institutional Manager
$882.7M· 49.9% of total· 1.2% port· 5.09M sh· — QoQ· Q1 2026
New
Hedge Fund
$135.9M· 7.7% of total· 0.1% port· 732K sh· — QoQ· Q4 2025
Added
Hedge Fund
$128.9M· 7.3% of total· 1.1% port· 743K sh· +$304K QoQ· Q1 2026
Added
Institutional Manager
$124.5M· 7.0% of total· 0.1% port· 718K sh· +$34.6M QoQ· Q1 2026
Reduced
Hedge Fund
$117.4M· 6.6% of total· 0.1% port· 677K sh· $-99.4M QoQ· Q1 2026
Reduced
Hedge Fund
$63.4M· 3.6% of total· 0.1% port· 366K sh· $-5.6M QoQ· Q1 2026
New
Hedge Fund
$61.3M· 3.5% of total· 0.1% port· 354K sh· — QoQ· Q1 2026
New
Hedge Fund
$55.6M· 3.1% of total· 1.3% port· 320K sh· — QoQ· Q1 2026
Added
Hedge Fund
$51.0M· 2.9% of total· 0.1% port· 294K sh· +$47.3M QoQ· Q1 2026
Reduced
Hedge Fund
$35.5M· 2.0% of total· 0.1% port· 205K sh· $-6.4M QoQ· Q1 2026
Reduced
Hedge Fund
$35.3M· 2.0% of total· 0.1% port· 203K sh· $-272K QoQ· Q1 2026
Added
Hedge Fund
$23.7M· 1.3% of total· 0.0% port· 136K sh· +$22.4M QoQ· Q1 2026
Reduced
Hedge Fund
$12.2M· 0.7% of total· 0.0% port· 70K sh· $-5.5M QoQ· Q1 2026
Added
Institutional Manager
$8.3M· 0.5% of total· 0.0% port· 48K sh· +$8.3M QoQ· Q1 2026
Added
Hedge Fund
$5.9M· 0.3% of total· 0.0% port· 27K sh· +$898K QoQ· Q3 2024
New
Hedge Fund
$5.4M· 0.3% of total· 0.0% port· 29K sh· — QoQ· Q4 2025
Reduced
Hedge Fund
$4.8M· 0.3% of total· 0.0% port· 26K sh· $-6.7M QoQ· Q4 2025
Added
Institutional Manager
$3.4M· 0.2% of total· 0.0% port· 20K sh· +$53K QoQ· Q1 2026
Added
Institutional Manager
$3.4M· 0.2% of total· 0.0% port· 19K sh· +$17K QoQ· Q1 2026
Reduced
Hedge Fund
$2.3M· 0.1% of total· 0.0% port· 13K sh· $-4.3M QoQ· Q1 2026
Reduced
Hedge Fund
$2.2M· 0.1% of total· 0.0% port· 12K sh· $-5.1M QoQ· Q1 2026
Reduced
Hedge Fund
$1.5M· 0.1% of total· 0.0% port· 9K sh· $-30.3M QoQ· Q1 2026
Reduced
Hedge Fund
$775K· 0.0% of total· 0.0% port· 5K sh· $-44K QoQ· Q1 2026
New
Family Office
$723K· 0.0% of total· 0.0% port· 3K sh· — QoQ· Q2 2025
Reduced
Hedge Fund
$663K· 0.0% of total· 0.0% port· 4K sh· $-5.7M QoQ· Q1 2026
New
Hedge Fund
$503K· 0.0% of total· 0.7% port· 2K sh· — QoQ· Q3 2025
New
Hedge Fund
$397K· 0.0% of total· 0.0% port· 2K sh· — QoQ· Q4 2025
Reduced
Institutional Manager
$353K· 0.0% of total· 0.0% port· 2K sh· $-24K QoQ· Q1 2026
New
Hedge Fund
$317K· 0.0% of total· 0.0% port· 2K sh· — QoQ· Q3 2025
Reduced
Hedge Fund
$286K· 0.0% of total· 0.0% port· 2K sh· $-1.0M QoQ· Q1 2026
Reduced
Hedge Fund
$225K· 0.0% of total· 0.0% port· 1K sh· $-1.2M QoQ· Q1 2026
Reduced
Hedge Fund
$212K· 0.0% of total· 0.0% port· 1K sh· $-12K QoQ· Q1 2026
Reduced
Hedge Fund
$867· 0.0% of total· 0.0% port· 5 sh· $-3.3M QoQ· Q1 2026
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