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
Campbell & CO Investment Adviser LLC	–	–	–	–	Not filed
M&G Plc	–	–	–	–	Not filed
Siemens Fonds Invest GmbH	–	–	–	–	Not filed
Auxier Asset Management	–	–	–	–	Not filed
Ipswich Investment Management Co., Inc.	–	–	–	–	Not filed
Third View Private Wealth, LLC	–	–	–	–	Not filed
Abc Arbitrage SA	–	–	–	–	Not filed
Schaper Benz & Wise Investment Counsel Inc	–	–	–	–	Not filed
Aurdan Capital Management, LLC	–	–	–	–	Not filed
Geneos Wealth Management Inc.	–	–	–	–	Not filed
Canada Post Corp Registered Pension Plan	–	–	–	–	Not filed
Kentucky Retirement Systems	–	–	–	–	Not filed
Advisors Asset Management, Inc.	–	–	–	–	Not filed
Bell Asset Management Ltd	–	–	–	–	Not filed
Cyndeo Wealth Partners, LLC	–	–	–	–	Not filed
Brevan Howard Capital Management LP	–	–	–	–	Not filed
SRS Capital Advisors, Inc.	–	–	–	–	Not filed
Aptus Capital Advisors, LLC	–	–	–	–	Not filed
Healthcare of Ontario Pension Plan Trust Fund	–	–	–	–	Not filed
Woodline Partners LP	–	–	–	–	Not filed
Flputnam Investment Management Co	–	–	–	–	Not filed
Sendero Wealth Management, LLC	–	–	–	–	Not filed
Parcion Private Wealth LLC	–	–	–	–	Not filed
Illinois Municipal Retirement Fund	–	–	–	–	Not filed
Capitolis Liquid Global Markets LLC	–	–	–	–	Not filed
Conning Inc.	–	–	–	–	Not filed
Cape Cod Five Cents Savings Bank	–	–	–	–	Not filed
Lathrop Investment Management Corp	–	–	–	–	Not filed
Norinchukin Bank, The	–	–	–	–	Not filed
Occidental Asset Management, LLC	–	–	–	–	Not filed
Hartford Investment Management Co	–	–	–	–	Not filed
Stokes Capital Advisors, LLC	–	–	–	–	Not filed
Huntington National Bank	–	–	–	–	Not filed
Hudson Valley Investment Advisors Inc	–	–	–	–	Not filed
Maryland State Retirement & Pension System	–	–	–	–	Not filed
Brinker Capital Investments, LLC	–	–	–	–	Not filed
Motco	–	–	–	–	Not filed
Omers Administration Corp	–	–	–	–	Not filed
Harrington Investments, INC	–	–	–	–	Not filed
Gluskin Sheff & Assoc Inc	–	–	–	–	Not filed
Bonness Enterprises Inc	–	–	–	–	Not filed
Intech Investment Management LLC	–	–	–	–	Not filed
Aviso Financial Inc.	–	–	–	–	Not filed
Snowden Capital Advisors LLC	–	–	–	–	Not filed
Louisiana State Employees Retirement System	–	–	–	–	Not filed
BI Asset Management Fondsmaeglerselskab A/S	–	–	–	–	Not filed
Hohimer Wealth Management, LLC	–	–	–	–	Not filed
Harbour Trust & Investment Management Co	–	–	–	–	Not filed
Exchange Traded Concepts, LLC	–	–	–	–	Not filed
New Mexico Educational Retirement Board	–	–	–	–	Not filed
Marks Group Wealth Management, Inc	–	–	–	–	Not filed
Dai-Ichi Life Insurance Company, Ltd	–	–	–	–	Not filed
Squarepoint Ops LLC	–	–	–	–	Not filed
First National Bank of Mount Dora, Trust Investment Services	–	–	–	–	Not filed
AG2R la Mondiale Gestion D'Actifs	–	–	–	–	Not filed
Ostrum Asset Management	–	–	–	–	Not filed
Larson Financial Group LLC	–	–	–	–	Not filed
First Manhattan Co	–	–	–	–	Not filed
Agf Management Ltd	–	–	–	–	Not filed
BNC Wealth Management, LLC	–	–	–	–	Not filed
Machina Capital S.A.S.	–	–	–	–	Not filed
Steward Partners Investment Advisory, LLC	–	–	–	–	Not filed
Morton Community Bank	–	–	–	–	Not filed
Scotia Capital Inc.	–	–	–	–	Not filed
Keybank National Association	–	–	–	–	Not filed
Private Advisor Group, LLC	–	–	–	–	Not filed
Cary Street Partners Financial LLC	–	–	–	–	Not filed
Balyasny Asset Management LLC	–	–	–	–	Not filed
Moneta Group Investment Advisors LLC	–	–	–	–	Not filed
Crossmark Global Holdings, Inc.	–	–	–	–	Not filed
Axxcess Wealth Management, LLC	–	–	–	–	Not filed
Brown, Lisle/Cummings, Inc.	–	–	–	–	Not filed
Becker Capital Management Inc	–	–	–	–	Not filed
RBF Capital, LLC	–	–	–	–	Not filed
Merit Financial Group, LLC	–	–	–	–	Not filed
Monte Financial Group, LLC	–	–	–	–	Not filed
Brentview Investment Management LLC	–	–	–	–	Not filed
Rothschild Investment LLC	–	–	–	–	Not filed
QRG Capital Management, Inc.	–	–	–	–	Not filed
Qube Research & Technologies Ltd	–	–	–	–	Not filed
Lafayette Investments, Inc.	–	–	–	–	Not filed
T. Rowe Price Investment Management, Inc.	–	–	–	–	Not filed
Vise Technologies, Inc.	–	–	–	–	Not filed
Polymer Capital Management (US) LLC	–	–	–	–	Not filed
Town & Country Bank & Trust CO dba First Bankers Trust CO	–	–	–	–	Not filed
MUFG Securities EMEA plc	–	–	–	–	Not filed
Beacon Pointe Advisors, LLC	–	–	–	–	Not filed
Gamco Investors, Inc. Et Al	–	–	–	–	Not filed
Bessemer Group Inc	–	–	–	–	Not filed
Brighton Jones LLC	–	–	–	–	Not filed
MAI Capital Management	–	–	–	–	Not filed
Founders Financial Securities LLC	–	–	–	–	Not filed
Financial Engines Advisors L.L.C.	–	–	–	–	Not filed
Bridgewater Associates, LP	–	–	–	–	Not filed
Commonwealth Retirement Investments LLC	–	–	–	–	Not filed
Heritage Trust Co	–	–	–	–	Not filed
Concurrent Investment Advisors, LLC	–	–	–	–	Not filed
Kestra Private Wealth Services, LLC	–	–	–	–	Not filed
Qsemble Capital Management, LP	–	–	–	–	Not filed
Univest Financial Corp	–	–	–	–	Not filed