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
Bridges Investment Management Inc	–	–	–	–	Not filed
Callan Family Office, LLC	–	–	–	–	Not filed
Thrivent Financial for Lutherans	–	–	–	–	Not filed
Sone Capital Management, LLC	–	–	–	–	Not filed
Pinebridge Investments LLC	–	–	–	–	Not filed
Ethic Inc.	–	–	–	–	Not filed
JustInvest LLC	–	–	–	–	Not filed
Assetmark, Inc	–	–	–	–	Not filed
Nissay Asset Management Corp	–	–	–	–	Not filed
Osborne Partners Capital Management, LLC	–	–	–	–	Not filed
Elo Mutual Pension Insurance Co	–	–	–	–	Not filed
Generali Asset Management SPA SGR	–	–	–	–	Not filed
Trexquant Investment LP	–	–	–	–	Not filed
State of Alaska, Department of Revenue	–	–	–	–	Not filed
Running Oak Capital LLC	–	–	–	–	Not filed
Public Employees Retirement Association of Colorado	–	–	–	–	Not filed
Ossiam	–	–	–	–	Not filed
Levin Capital Strategies, L.P.	–	–	–	–	Not filed
Lido Advisors, LLC	–	–	–	–	Not filed
Apollon Wealth Management, LLC	–	–	–	–	Not filed
Gabelli Funds LLC	–	–	–	–	Not filed
Andra AP-fonden	–	–	–	–	Not filed
Advisor Group Holdings, Inc.	–	–	–	–	Not filed
Oregon Public Employees Retirement Fund	–	–	–	–	Not filed
Quantbot Technologies LP	–	–	–	–	Not filed
Diversified Trust Co	–	–	–	–	Not filed
First American Bank	–	–	–	–	Not filed
Kinsale Capital Group, Inc.	–	–	–	–	Not filed
Alyeska Investment Group, L.P.	–	–	–	–	Not filed
ASR Vermogensbeheer N.V.	–	–	–	–	Not filed
CIBC World Markets Inc.	–	–	–	–	Not filed
Susquehanna International Group, LLP	–	–	–	–	Not filed
Macquarie Group Ltd	–	–	–	–	Not filed
Atria Investments LLC	–	–	–	–	Not filed
Wealthfront Advisers LLC	–	–	–	–	Not filed
OP Asset Management Ltd	–	–	–	–	Not filed
Guggenheim Capital LLC	–	–	–	–	Not filed
Candriam Luxembourg S.C.A.	–	–	–	–	Not filed
MML Investors Services, LLC	–	–	–	–	Not filed
UniSuper Management Pty Ltd	–	–	–	–	Not filed
Mediolanum International Funds Ltd	–	–	–	–	Not filed
Horizon Investments, LLC	–	–	–	–	Not filed
Azimuth Capital Investment Management LLC	–	–	–	–	Not filed
Mirae Asset Global ETFs Holdings Ltd.	–	–	–	–	Not filed
Stock Yards Bank & Trust Co	–	–	–	–	Not filed
Y-Intercept (Hong Kong) Ltd	–	–	–	–	Not filed
Hantz Financial Services, Inc.	–	–	–	–	Not filed
Yousif Capital Management, LLC	–	–	–	–	Not filed
Mutual of America Capital Management LLC	–	–	–	–	Not filed
Commonwealth Equity Services, LLC	–	–	–	–	Not filed
Baker Avenue Asset Management, LP	–	–	–	–	Not filed
Crawford Investment Counsel Inc	–	–	–	–	Not filed
Algebris (UK) Ltd	–	–	–	–	Not filed
Interval Partners, LP	–	–	–	–	Not filed
Raiffeisen Bank International AG	–	–	–	–	Not filed
Commerce Bank	–	–	–	–	Not filed
Formuepleje A/S	–	–	–	–	Not filed
Bleakley Financial Group, LLC	–	–	–	–	Not filed
JLB & Associates Inc	–	–	–	–	Not filed
Vontobel Holding Ltd.	–	–	–	–	Not filed
Peapack Gladstone Financial Corp	–	–	–	–	Not filed
Washington Trust Bank	–	–	–	–	Not filed
Sanibel Captiva Trust Company, Inc.	–	–	–	–	Not filed
Avanza Fonder AB	–	–	–	–	Not filed
Blair William & Co	–	–	–	–	Not filed
Allianz Asset Management GmbH	–	–	–	–	Not filed
Te Ahumairangi Investment Management Ltd	–	–	–	–	Not filed
Hamilton Capital Partners Inc.	–	–	–	–	Not filed
Union Bancaire Privee, UBP SA	–	–	–	–	Not filed
Savant Capital, LLC	–	–	–	–	Not filed
Kingsview Wealth Management, LLC	–	–	–	–	Not filed
Franklin, Parlapiano, Turner & Welch, LLC	–	–	–	–	Not filed
Empowered Funds, LLC	–	–	–	–	Not filed
EP Wealth Advisors, LLC	–	–	–	–	Not filed
Bank Julius Baer & Co. Ltd, Zurich	–	–	–	–	Not filed
Capital Management Corp	–	–	–	–	Not filed
Benjamin Edwards Inc	–	–	–	–	Not filed
Builder Investment Group Inc	–	–	–	–	Not filed
JB Capital LLC	–	–	–	–	Not filed
Mizuho Securities USA LLC	–	–	–	–	Not filed
B. Metzler seel. Sohn & Co. AG	–	–	–	–	Not filed
Capital International Sarl	–	–	–	–	Not filed
Walter Public Investments Inc.	–	–	–	–	Not filed
Gulf International Bank (UK) Ltd	–	–	–	–	Not filed
Vident Advisory, LLC	–	–	–	–	Not filed
GWM Advisors LLC	–	–	–	–	Not filed
Vestmark Advisory Solutions, Inc.	–	–	–	–	Not filed
Los Angeles Capital Management LLC	–	–	–	–	Not filed
Pacer Advisors, Inc.	–	–	–	–	Not filed
Bennett Selby Investments LP	–	–	–	–	Not filed
Cincinnati Specialty Underwriters Insurance CO	–	–	–	–	Not filed
Nomura Holdings Inc	–	–	–	–	Not filed
Investment Management Corp of Ontario	–	–	–	–	Not filed
King Luther Capital Management Corp	–	–	–	–	Not filed
Mount Yale Investment Advisors, LLC	–	–	–	–	Not filed
Ci Investments Inc.	–	–	–	–	Not filed
Northwestern Mutual Wealth Management Co	–	–	–	–	Not filed
Altrius Capital Management Inc	–	–	–	–	Not filed
M&T Bank Corp	–	–	–	–	Not filed
Saudi Central Bank	–	–	–	–	Not filed