Who owns Marsh & McLennan Companies (MRSH)
Which tracked institutional funds hold MRSH, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MRSH company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
191 tracked funds added or opened MRSH while 480 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MRSH’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.0pp gap the other way — the median holder sizes MRSH more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in MRSH divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 1416 tracked filers holding MRSH, 593 increased or opened the position and 892 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MRSH between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 54
- EdgePoint Investment Group Inc.$637M
- National Pension Service$188M
- Boston Partners$76M
- Focused Investors LLC$67M
- Black Creek Investment Management Inc.$64M
- Jupiter Topco LLC$34M
Full exits 113
- Amundi$399M
- CANADA LIFE ASSURANCE Co$233M
- NIPPON LIFE INSURANCE CO$227M
- DekaBank Deutsche Girozentrale$212M
- NATIXIS ADVISORS, LLC$147M
- ACADIAN ASSET MANAGEMENT LLC$146M
Largest adds
- HARRIS ASSOCIATES L P$551M
- Artisan Partners Limited Partnership$366M
- PRICE T ROWE ASSOCIATES INC /MD/$336M
- PRIMECAP MANAGEMENT CO/CA/$233M
- CANADA PENSION PLAN INVESTMENT BOARD$127M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$96M
Largest trims
- FMR LLC$606M
- NORGES BANK$353M
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/$334M
- Clearbridge Investments, LLC$330M
- Mawer Investment Management Ltd.$291M
- BANK OF AMERICA CORP /DE/$281M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 39,502,046 | $6.6B | 10.3% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 31,472,575 | $5.2B | 8.2% | 2026-Q2 |
| STATE STREET CORP added | 22,401,676 | $3.7B | 5.8% | 2026-Q2 |
| Capital World Investors added | 18,122,340 | $3.0B | 4.7% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 16,975,238 | $2.8B | 4.4% | 2026-Q2 |
| Capital International Investors added | 15,729,457 | $2.6B | 4.1% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 13,510,274 | $2.3B | 3.5% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 13,438,662 | $2.2B | 3.5% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 12,570,512 | $2.1B | 3.3% | 2026-Q2 |
| Capital Research Global Investors trimmed | 10,973,649 | $1.8B | 2.8% | 2026-Q2 |
| HARRIS ASSOCIATES L P added | 8,687,496 | $1.4B | 2.3% | 2026-Q2 |
| Artisan Partners Limited Partnership added | 7,269,246 | $1.2B | 1.9% | 2026-Q2 |
| FMR LLC trimmed | 6,954,123 | $1.2B | 1.8% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 6,507,415 | $1.1B | 1.7% | 2026-Q2 |
| MORGAN STANLEY trimmed | 6,314,085 | $1.1B | 1.6% | 2026-Q2 |
| NORGES BANK added | 6,255,525 | $1.0B | 1.6% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 5,535,138 | $922M | 1.4% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 4,888,165 | $815M | 1.3% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 4,730,329 | $789M | 1.2% | 2026-Q2 |
| Clearbridge Investments, LLC trimmed | 4,705,966 | $784M | 1.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 4,597,647 | $766M | 1.2% | 2026-Q2 |
| Invesco Ltd. added | 4,305,773 | $718M | 1.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 4,228,626 | $705M | 1.1% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 4,170,110 | $695M | 1.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 4,113,644 | $686M | 1.1% | 2026-Q2 |
| Ninety One UK Ltd trimmed | 3,971,522 | $662M | 1.0% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 3,877,741 | $646M | 1.0% | 2026-Q2 |
| EdgePoint Investment Group Inc. new | 3,820,196 | $637M | 1.0% | 2026-Q2 |
| UBS Group AG trimmed | 3,603,522 | $601M | 0.9% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 3,455,003 | $576M | 0.9% | 2026-Q2 |
| Nuveen, LLC trimmed | 3,451,900 | $575M | 0.9% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 3,194,567 | $532M | 0.8% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 3,072,405 | $512M | 0.8% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 2,813,877 | $469M | 0.7% | 2026-Q2 |
| Legal & General Group Plc trimmed | 2,793,483 | $466M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 2,705,812 | $451M | 0.7% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 2,607,451 | $432M | 0.7% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 2,510,228 | $418M | 0.7% | 2026-Q2 |
| STIFEL FINANCIAL CORP trimmed | 2,212,398 | $369M | 0.6% | 2026-Q2 |
| PRIMECAP MANAGEMENT CO/CA/ added | 2,145,025 | $358M | 0.6% | 2026-Q2 |
| W1M Asset Management Ltd added | 2,090,489 | $348M | 0.5% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 2,061,247 | $358M | 0.6% | 2026-Q2 |
| PARNASSUS INVESTMENTS, LLC trimmed | 2,047,623 | $341M | 0.5% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 2,022,672 | $337M | 0.5% | 2026-Q2 |
| Mawer Investment Management Ltd. trimmed | 1,871,159 | $312M | 0.5% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 1,867,077 | $311M | 0.5% | 2026-Q2 |
| Rathbones Group PLC added | 1,733,034 | $289M | 0.4% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD added | 1,605,850 | $268M | 0.4% | 2026-Q2 |
| Navera Investment Management Ltd. trimmed | 1,517,459 | $253M | 0.4% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC trimmed | 1,516,945 | $253M | 0.4% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 1,497,934 | $250M | 0.4% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 1,485,628 | $248M | 0.4% | 2026-Q2 |
| Swiss National Bank trimmed | 1,359,000 | $227M | 0.4% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 1,330,728 | $222M | 0.3% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 1,319,512 | $220M | 0.3% | 2026-Q2 |
| Swedbank AB added | 1,301,456 | $217M | 0.3% | 2026-Q2 |
| Polar Capital Holdings Plc added | 1,300,000 | $217M | 0.3% | 2026-Q2 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 1,199,699 | $200M | 0.3% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 1,187,191 | $198M | 0.3% | 2026-Q2 |
| National Pension Service trimmed | 1,128,564 | $188M | 0.3% | 2026-Q2 |
| Sumitomo Mitsui Trust Group, Inc. added | 1,100,656 | $183M | 0.3% | 2026-Q2 |
| Vanguard Global Advisers, LLC added | 1,099,122 | $183M | 0.3% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 1,089,768 | $182M | 0.3% | 2026-Q2 |
| MARSHALL WACE, LLP added | 1,043,399 | $174M | 0.3% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 1,022,077 | $170M | 0.3% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 998,086 | $166M | 0.3% | 2026-Q2 |
| JENSEN INVESTMENT MANAGEMENT INC trimmed | 984,904 | $164M | 0.3% | 2026-Q2 |
| BARCLAYS PLC trimmed | 982,810 | $164M | 0.3% | 2026-Q2 |
| Caisse de depot et placement du Quebec added | 982,538 | $164M | 0.3% | 2026-Q2 |
| STOREBRAND ASSET MANAGEMENT AS added | 974,704 | $162M | 0.3% | 2026-Q2 |
| Robeco Institutional Asset Management B.V. added | 906,861 | $151M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 892,176 | $149M | 0.2% | 2026-Q2 |
| FIL Ltd added | 887,945 | $148M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 865,316 | $144M | 0.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 839,616 | $140M | 0.2% | 2026-Q2 |
| TD Asset Management Inc trimmed | 800,370 | $133M | 0.2% | 2026-Q2 |
| Markel Group Inc. | 763,500 | $127M | 0.2% | 2026-Q2 |
| Capital International, Inc./CA/ trimmed | 739,907 | $123M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 735,926 | $123M | 0.2% | 2026-Q2 |
| MACKENZIE FINANCIAL CORP added | 729,781 | $122M | 0.2% | 2026-Q2 |
| JENNISON ASSOCIATES LLC added | 683,273 | $114M | 0.2% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 654,434 | $109M | 0.2% | 2026-Q2 |
| Cryder Capital Partners LLP added | 649,418 | $108M | 0.2% | 2026-Q2 |
| Epoch Investment Partners, Inc. trimmed | 635,153 | $106M | 0.2% | 2026-Q2 |
| PNC Financial Services Group, Inc. trimmed | 619,003 | $103M | 0.2% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ added | 613,768 | $102M | 0.2% | 2026-Q2 |
| DAVENPORT & Co LLC trimmed | 612,045 | $102M | 0.2% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 604,724 | $101M | 0.2% | 2026-Q2 |
| JUPITER ASSET MANAGEMENT LTD trimmed | 588,501 | $97M | 0.2% | 2026-Q2 |
| CITIGROUP INC added | 570,878 | $95M | 0.1% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 515,312 | $86M | 0.1% | 2026-Q2 |
| Pictet Asset Management Holding SA added | 514,868 | $86M | 0.1% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH trimmed | 514,651 | $87M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 499,555 | $83M | 0.1% | 2026-Q2 |
| Mariner, LLC trimmed | 498,195 | $83M | 0.1% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP trimmed | 488,649 | $83M | 0.1% | 2026-Q2 |
| JOHNSON INVESTMENT COUNSEL INC trimmed | 478,020 | $80M | 0.1% | 2026-Q2 |
| Munich Reinsurance Co Stock Corp in Munich | 460,618 | $77M | 0.1% | 2026-Q2 |
| Boston Partners new | 457,791 | $76M | 0.1% | 2026-Q2 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM trimmed | 425,963 | $71M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.