Marsh & McLennan Companies, Inc.

MRSH

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

SEC filings (opens in a new tab)

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.

13F holders, Q3 2026

Institutional positions in Marsh & McLennan Companies, Inc. as of Sep 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

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

Institutional holders: 6; 0 vs. Q2 2026
Shares held: 12.9K; −48.4K (−79.0%) vs. Q2 2026
Total value: $2.20M; −$8.01M (−78.4%) vs. Q2 2026
New holders: 0; 2 more added
Sold out: 0; 2 more reduced

1,500 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MRSH on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holders

Value held

Institutions holding MRSH and their total value by quarter
Quarter	Holders	Value
Q2 2026	1,506	$73.1B
Q1 2026	1,548	$76.1B
Q4 2025	1,594	$80.9B
Q3 2025	1,576	$87.2B
Q2 2025	1,610	$97.3B
Q1 2025	1,627	$108.0B
Q4 2024	1,578	$94.2B
Q3 2024	1,531	$97.1B
Q2 2024	1,476	$92.3B
Q1 2024	1,444	$89.9B
Q4 2023	1,376	$82.4B
Q3 2023	1,294	$82.0B
Q2 2023	1,258	$81.5B
Q1 2023	1,228	$72.1B
Q4 2022	1,223	$72.3B
Q3 2022	1,159	$65.5B
Q2 2022	1,150	$68.6B
Q1 2022	1,151	$75.2B
Q4 2021	1,170	$77.6B
Q3 2021	1,078	$68.0B
Q2 2021	1,007	$63.6B
Q1 2021	979	$54.7B

Institutions, Q3 2026

Shares, value and share of portfolio for each institution holding Marsh & McLennan Companies, Inc.; share changes are against Q2 2026.

Institutions holding MRSH in Q3 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
STRS Ohio	–	–	–	–	Not filed
Toroso Investments, LLC	–	–	–	–	Not filed
Resona Asset Management Co.,Ltd.	–	–	–	–	Not filed
State of Tennessee, Treasury Department	–	–	–	–	Not filed
Lansforsakringar Fondforvaltning AB (publ)	–	–	–	–	Not filed
Colony Group, LLC	–	–	–	–	Not filed
Mn Services Vermogensbeheer B.V.	–	–	–	–	Not filed
Rafferty Asset Management, LLC	–	–	–	–	Not filed
Sumitomo Mitsui DS Asset Management Company, Ltd	–	–	–	–	Not filed
Ensign Peak Advisors, Inc	–	–	–	–	Not filed
Horizon Kinetics Asset Management LLC	–	–	–	–	Not filed
Distillate Capital Partners LLC	–	–	–	–	Not filed
Varma Mutual Pension Insurance Co	–	–	–	–	Not filed
Natixis	–	–	–	–	Not filed
Voya Investment Management LLC	–	–	–	–	Not filed
Kayne Anderson Rudnick Investment Management LLC	–	–	–	–	Not filed
Public Sector Pension Investment Board	–	–	–	–	Not filed
Czech National Bank	–	–	–	–	Not filed
Capital Fund Management S.A.	–	–	–	–	Not filed
Glenmede Trust Co NA	–	–	–	–	Not filed
Schroder Investment Management Group	–	–	–	–	Not filed
Hardman Johnston Global Advisors LLC	–	–	–	–	Not filed
US Bancorp	–	–	–	–	Not filed
Creative Planning	–	–	–	–	Not filed
Arizona State Retirement System	–	–	–	–	Not filed
SEB Asset Management AB	–	–	–	–	Not filed
Calamos Advisors LLC	–	–	–	–	Not filed
State of Michigan Retirement System	–	–	–	–	Not filed
Banque Pictet & Cie SA	–	–	–	–	Not filed
Brown Brothers Harriman & Co	–	–	–	–	Not filed
Cetera Investment Advisers	–	–	–	–	Not filed
Bank of Nova Scotia	–	–	–	–	Not filed
Teachers Retirement System of the State of Kentucky	–	–	–	–	Not filed
Choate Investment Advisors	–	–	–	–	Not filed
First Pacific Advisors, LP	–	–	–	–	Not filed
Neuberger Berman Group LLC	–	–	–	–	Not filed
Van Eck Associates Corp	–	–	–	–	Not filed
Prudential PLC	–	–	–	–	Not filed
DnB Asset Management AS	–	–	–	–	Not filed
Pictet & Cie (Europe) SA	–	–	–	–	Not filed
Boston Trust Walden Corp	–	–	–	–	Not filed
ProShare Advisors LLC	–	–	–	–	Not filed
Badgley Phelps Wealth Managers, LLC	–	–	–	–	Not filed
MetLife Investment Management	–	–	–	–	Not filed
Alps Advisors Inc	–	–	–	–	Not filed
AE Wealth Management LLC	–	–	–	–	Not filed
Capital Group Private Client Services, Inc.	–	–	–	–	Not filed
IFM Investors Pty Ltd	–	–	–	–	Not filed
Commonwealth of Pennsylvania Public School Empls Retrmt Sys	–	–	–	–	Not filed
CIBC Bancorp USA Inc.	–	–	–	–	Not filed
Mirae Asset Global Investments Co., Ltd.	–	–	–	–	Not filed
Boston Family Office LLC	–	–	–	–	Not filed
Washington Trust Co	–	–	–	–	Not filed
Retirement Systems of Alabama	–	–	–	–	Not filed
Wealth Enhancement Advisory Services, LLC	–	–	–	–	Not filed
PensionDanmark Pensionsforsikringsaktieselskab	–	–	–	–	Not filed
Close Asset Management Ltd	–	–	–	–	Not filed
RMB Capital Management, LLC	–	–	–	–	Not filed
KBC Group NV	–	–	–	–	Not filed
Daiwa Securities Group Inc.	–	–	–	–	Not filed
Crestwood Advisors Group LLC	–	–	–	–	Not filed
SG Americas Securities, LLC	–	–	–	–	Not filed
Torray LLC	–	–	–	–	Not filed
Glenview Trust Co	–	–	–	–	Not filed
ExodusPoint Capital Management, LP	–	–	–	–	Not filed
National Bank of Canada	–	–	–	–	Not filed
Aware Super Pty Ltd as trustee of Aware Super	–	–	–	–	Not filed
Xponance, Inc.	–	–	–	–	Not filed
Wiley Bros.-Aintree Capital, LLC	–	–	–	–	Not filed
Amalgamated Bank	–	–	–	–	Not filed
Segment Wealth Management, LLC	–	–	–	–	Not filed
Lombard Odier Asset Management (Europe) Ltd	–	–	–	–	Not filed
Credit Agricole S A	–	–	–	–	Not filed
Oppenheimer Asset Management Inc.	–	–	–	–	Not filed
Northwest & Ethical Investments L.P.	–	–	–	–	Not filed
Ieq Capital, LLC	–	–	–	–	Not filed
Fideuram - Intesa Sanpaolo Private Banking S.P.A.	–	–	–	–	Not filed
O'Shaughnessy Asset Management, LLC	–	–	–	–	Not filed
Mercer Global Advisors Inc	–	–	–	–	Not filed
Wesleyan Assurance Society	–	–	–	–	Not filed
USS Investment Management Ltd	–	–	–	–	Not filed
Rakuten Investment Management, Inc.	–	–	–	–	Not filed
NEOS Investment Management LLC	–	–	–	–	Not filed
Factory Mutual Insurance Co	–	–	–	–	Not filed
Sanctuary Advisors, LLC	–	–	–	–	Not filed
Tudor Investment Corp Et Al	–	–	–	–	Not filed
Brown Advisory Inc	–	–	–	–	Not filed
Whittier Trust Co of Nevada Inc	–	–	–	–	Not filed
Utah Retirement Systems	–	–	–	–	Not filed
Foyston, Gordon, & Payne Inc	–	–	–	–	Not filed
Vancity Investment Management Ltd	–	–	–	–	Not filed
British Columbia Investment Management Corp	–	–	–	–	Not filed
Police & Firemen's Retirement System of New Jersey	–	–	–	–	Not filed
New York Life Investment Management LLC	–	–	–	–	Not filed
Allstate Corp	–	–	–	–	Not filed
Rockefeller Capital Management L.P.	–	–	–	–	Not filed
Millennium Management LLC	–	–	–	–	Not filed
Nixon Peabody Trust Co	–	–	–	–	Not filed
McRae Capital Management Inc	–	–	–	–	Not filed
Captrust Financial Advisors	–	–	–	–	Not filed