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Marsh & McLennan Companies, Inc.

MRSH
Exchange
NYSE
Industry
Insurance Agents, Brokers & Service
SEC CIK
0000062709

In the last 90 days, Marsh & McLennan Companies, Inc. insiders filed 0 open-market purchases and 6 sales; 1,506 institutions reported holding it in 13F filings for Q2 2026, worth $73.1B in total; superinvestors Harris Associates (Oakmark) and Markel Group hold it.

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Q3 2026 vs. Q2 2026

How the institutions holding Marsh & McLennan Companies, Inc. changed between Q2 2026 and Q3 2026.

All holders in Q3 2026All holders in Q2 2026

13F holders of MRSH: Q2 2026 compared with Q3 2026
MeasureQ2 2026Of which not filed for Q3 2026Q3 2026Change
Holders1,5061,490160
Shares438.4M438.3M47.8K−50.8K (−51.5%)
Value$73.1B$73.1B$8.16M−$8.27M (−50.3%)

1,490 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (0)

Institutions that held Marsh & McLennan Companies, Inc. at the end of Q3 2026 but not at the end of Q2 2026.

None.

Sold out (0)

Institutions that held Marsh & McLennan Companies, Inc. at the end of Q2 2026 and filed for Q3 2026 without it.

None.

Not filed for Q3 2026 yet (1,490)

Institutions that held Marsh & McLennan Companies, Inc. at the end of Q2 2026 and haven't filed a 13F for Q3 2026. Not filing isn't selling, so they aren't counted as sold out.

Showing the largest 100 of 1,490 by value.

Institutions holding MRSH in Q2 2026 that haven't filed for Q3 2026
InstitutionShares, Q2 2026Value, Q2 2026
BlackRock, Inc.39,502,046$6.58B
Vanguard Capital Management LLC31,472,575$5.25B
State Street Corp22,401,676$3.73B
Capital World Investors18,122,340$3.02B
Wellington Management Group LLP16,975,238$2.83B
Capital International Investors15,729,457$2.62B
Geode Capital Management, LLC13,510,274$2.25B
Price T Rowe Associates Inc13,438,662$2.24B
Vanguard Portfolio Management LLC12,570,512$2.10B
Capital Research Global Investors10,973,649$1.83B
Harris Associates L PSuperinvestorHarris Associates (Oakmark)8,687,496$1.45B
Artisan Partners Limited Partnership7,269,246$1.21B
FMR LLC6,954,123$1.16B
Massachusetts Financial Services Co6,507,415$1.09B
Morgan Stanley6,314,085$1.05B
Norges Bank6,255,525$1.04B
Ameriprise Financial Inc5,535,138$922.1M
Northern Trust Corp4,888,165$814.7M
JPMorgan Chase & Co4,730,329$788.6M
Clearbridge Investments, LLC4,705,966$784.3M
UBS Asset Management Americas Inc4,597,647$766.3M
Invesco Ltd.4,305,773$717.6M
Goldman Sachs Group Inc4,228,626$704.8M
Arrowstreet Capital, Limited Partnership4,170,110$695.0M
Deutsche Bank AG4,113,644$685.6M
Ninety One UK Ltd3,971,522$661.9M
American Century Companies Inc3,877,741$646.3M
EdgePoint Investment Group Inc.3,820,196$636.7M
UBS Group AG3,603,522$600.6M
Bank of America Corp3,455,003$575.8M
Nuveen, LLC3,451,900$575.3M
Bank of New York Mellon Corp3,194,567$532.4M
Charles Schwab Investment Management Inc3,072,405$512.1M
Amundi2,884,376$480.7M
Royal Bank of Canada2,813,877$469.0M
Legal & General Group Plc2,793,483$465.6M
Vanguard Fiduciary Trust Co2,705,812$451.0M
AQR Capital Management LLC2,607,451$432.1M
Wells Fargo & Company2,510,228$418.4M
Stifel Financial Corp2,212,398$368.7M
Alliancebernstein L.P.2,061,247$357.5M
Primecap Management Co2,145,025$357.5M
London & Capital Asset Management Ltd2,090,489$348.2M
Parnassus Investments2,047,623$341.3M
Dimensional Fund Advisors LP2,022,672$337.1M
Mawer Investment Management Ltd.1,871,159$311.9M
Manufacturers Life Insurance Company, The1,867,077$311.2M
Rathbone Brothers plc1,733,034$288.8M
Canada Pension Plan Investment Board1,605,850$267.6M
Beutel, Goodman & Co Ltd.1,573,890$262.3M
Lazard Asset Management LLC1,516,945$252.8M
Veritas Investment Partners (UK) Ltd.1,517,459$252.8M
BNP Paribas Arbitrage, SA1,497,934$249.7M
Franklin Resources Inc1,485,628$247.6M
Swiss National Bank1,359,000$226.5M
Voloridge Investment Management, LLC1,330,728$221.8M
First Trust Advisors LP1,319,512$219.9M
Nippon Life Insurance Co1,311,350$218.6M
Swedbank AB1,301,456$216.9M
Polar Capital Holdings Plc1,300,000$216.7M
DekaBank Deutsche Girozentrale1,193,291$207.5M
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.1,199,699$200.1M
Raymond James Financial Inc1,187,191$197.9M
Great West Life Assurance Co1,155,368$192.1M
National Pension Service1,128,564$188.1M
Sumitomo Mitsui Trust Holdings, Inc.1,100,656$183.4M
Vanguard Global Advisers, LLC1,099,122$183.2M
Vanguard Asset Management, Ltd1,089,768$181.6M
Marshall Wace, LLP1,043,399$173.9M
HSBC Holdings PLC1,022,077$170.4M
Envestnet Asset Management Inc998,086$166.4M
Jensen Investment Management Inc984,904$164.2M
Barclays PLC982,810$163.8M
Caisse de Depot Et Placement du Quebec982,538$163.8M
Storebrand Asset Management AS974,704$162.5M
Robeco Institutional Asset Management B.V.906,861$151.1M
Rhumbline Advisers892,176$148.7M
FIL Ltd887,945$148.0M
California Public Employees Retirement System865,316$144.2M
D. E. Shaw & Co., Inc.839,616$139.9M
TD Asset Management Inc800,370$133.4M
Markel Group Inc.SuperinvestorMarkel Group763,500$127.3M
Acadian Asset Management LLC748,439$124.7M
Capital International Inc739,907$123.3M
California State Teachers Retirement System735,926$122.7M
Mackenzie Financial Corp729,781$121.6M
Jennison Associates LLC683,273$113.9M
Assenagon Asset Management S.A.654,434$109.1M
Cryder Capital Partners LLP649,418$108.2M
Natixis Advisors, L.P.635,893$106.0M
Epoch Investment Partners, Inc.635,153$105.9M
The PNC Financial Services Group, Inc.619,003$103.2M
Bank of Montreal613,768$102.3M
Davenport & Co LLC612,045$102.0M
Principal Financial Group Inc604,724$100.8M
Jupiter Asset Management Ltd588,501$97.3M
Citigroup Inc570,878$95.1M
Universal- Beteiligungs- und Servicegesellschaft mbH514,651$86.5M
New York State Common Retirement Fund515,312$85.9M
Pictet Asset Management Holding SA514,868$85.8M