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: 1; 0 vs. Q2 2026
Shares held: 8; 0 (0.0%) vs. Q2 2026
Total value: $1.37K; +$33 (+2.5%) vs. Q2 2026
New holders: 0; 0 more added
Sold out: 0; 0 more reduced

1,505 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
Pictet Asset Management Holding SA	–	–	–	–	Not filed
Russell Investments Group, Ltd.	–	–	–	–	Not filed
Mariner, LLC	–	–	–	–	Not filed
Jones Financial Companies LLLP	–	–	–	–	Not filed
Johnson Investment Counsel Inc	–	–	–	–	Not filed
Munich Reinsurance Co Stock Corp in Munich	–	–	–	–	Not filed
Boston Partners	–	–	–	–	Not filed
State Board of Administration of Florida Retirement System	–	–	–	–	Not filed
Aviva PLC	–	–	–	–	Not filed
Nomura Asset Management International Inc.	–	–	–	–	Not filed
Birch Hill Investment Advisors LLC	–	–	–	–	Not filed
Focused Investors LLC	–	–	–	–	Not filed
PFA Pension, Forsikringsaktieselskab	–	–	–	–	Not filed
SEI Investments Co	–	–	–	–	Not filed
LPL Financial LLC	–	–	–	–	Not filed
Standard Life Aberdeen plc	–	–	–	–	Not filed
Bradley Foster & Sargent Inc	–	–	–	–	Not filed
Black Creek Investment Management Inc.	–	–	–	–	Not filed
Mitsubishi UFJ Trust & Banking Corp	–	–	–	–	Not filed
APG Asset Management N.V.	–	–	–	–	Not filed
Silvercrest Asset Management Group LLC	–	–	–	–	Not filed
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund	–	–	–	–	Not filed
Scharf Investments, LLC	–	–	–	–	Not filed
Madison Asset Management, LLC	–	–	–	–	Not filed
Quantinno Capital Management LP	–	–	–	–	Not filed
L1 Capital International Pty Ltd	–	–	–	–	Not filed
Impax Asset Management Group plc	–	–	–	–	Not filed
New York State Teachers Retirement System	–	–	–	–	Not filed
Temasek Holdings (Private) Ltd	–	–	–	–	Not filed
Nomura Asset Management Co Ltd	–	–	–	–	Not filed
Lord, Abbett & Co. LLC	–	–	–	–	Not filed
CI Private Wealth, LLC	–	–	–	–	Not filed
Baird Financial Group, Inc.	–	–	–	–	Not filed
Ninety One North America, Inc.	–	–	–	–	Not filed
Zurcher Kantonalbank (Zurich Cantonalbank)	–	–	–	–	Not filed
Korea Investment CORP	–	–	–	–	Not filed
Danske Bank A/S	–	–	–	–	Not filed
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	–	–	–	–	Not filed
Vaughan David Investments LLC	–	–	–	–	Not filed
Allspring Global Investments Holdings, LLC	–	–	–	–	Not filed
State of Wisconsin Investment Board	–	–	–	–	Not filed
AMF Pensionsforsakring AB	–	–	–	–	Not filed
Cincinnati Financial Corp	–	–	–	–	Not filed
Man Group plc	–	–	–	–	Not filed
Quilter Plc	–	–	–	–	Not filed
Capital Investment Advisors, LLC	–	–	–	–	Not filed
HighTower Advisors, LLC	–	–	–	–	Not filed
Prudential Financial Inc	–	–	–	–	Not filed
Vanguard Investments Australia, Ltd.	–	–	–	–	Not filed
Truist Financial Corp	–	–	–	–	Not filed
Bahl & Gaynor Inc	–	–	–	–	Not filed
Teacher Retirement System of Texas	–	–	–	–	Not filed
Ycg, LLC	–	–	–	–	Not filed
Chevy Chase Trust Holdings, Inc.	–	–	–	–	Not filed
KLP Kapitalforvaltning AS	–	–	–	–	Not filed
Citadel Advisors LLC	–	–	–	–	Not filed
Asset Management One Co.,Ltd.	–	–	–	–	Not filed
Panagora Asset Management Inc	–	–	–	–	Not filed
Handelsbanken Fonder AB	–	–	–	–	Not filed
Royal London Asset Management Ltd	–	–	–	–	Not filed
Janney Montgomery Scott LLC	–	–	–	–	Not filed
Gillespie Robinson & Grimm Inc	–	–	–	–	Not filed
Treasurer of the State of North Carolina	–	–	–	–	Not filed
Jupiter Topco LLC	–	–	–	–	Not filed
Two Sigma Investments, LP	–	–	–	–	Not filed
Zacks Investment Management	–	–	–	–	Not filed
Pathstone Holdings, LLC	–	–	–	–	Not filed
Eurizon Capital SGR S.p.A.	–	–	–	–	Not filed
CIBC Asset Management Inc	–	–	–	–	Not filed
Kempen Capital Management N.V.	–	–	–	–	Not filed
Whittier Trust Co	–	–	–	–	Not filed
Abn Amro Investment Solutions	–	–	–	–	Not filed
Fifth Third Bancorp	–	–	–	–	Not filed
Public Employees Retirement System of Ohio	–	–	–	–	Not filed
Federation des caisses Desjardins du Quebec	–	–	–	–	Not filed
Sterling Capital Management LLC	–	–	–	–	Not filed
Cerity Partners LLC	–	–	–	–	Not filed
Toronto Dominion Bank	–	–	–	–	Not filed
Victory Capital Management Inc	–	–	–	–	Not filed
Waycross Partners, LLC	–	–	–	–	Not filed
Nordea Investment Management AB	–	–	–	–	Not filed
TD Waterhouse Canada Inc.	–	–	–	–	Not filed
Tredje AP-fonden	–	–	–	–	Not filed
Deprince Race & Zollo Inc	–	–	–	–	Not filed
Vinva Investment Management Ltd	–	–	–	–	Not filed
LGT Capital Partners Ltd.	–	–	–	–	Not filed
Ilmarinen Mutual Pension Insurance Co	–	–	–	–	Not filed
Sarasin & Partners LLP	–	–	–	–	Not filed
Cincinnati Insurance Co	–	–	–	–	Not filed
Compagnie Lombard Odier SCmA	–	–	–	–	Not filed
Gotham Asset Management, LLC	–	–	–	–	Not filed
Swiss Life Asset Management Ltd	–	–	–	–	Not filed
Nisa Investment Advisors, LLC	–	–	–	–	Not filed
State of New Jersey Common Pension Fund D	–	–	–	–	Not filed
Nykredit A/S	–	–	–	–	Not filed
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