Marsh & Mclennan Companies MRSH Institutional Ownership

NYSE MRSH

$171.81 +2.07 (+1.22%)

As of: Oct 1, 2026 · 3:59 PM EDT

Institutions by Trading Activity

1,501 Institutions

Increased 626 41.7%

Unchanged 222 14.8%

Reduced 653 43.5%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

94.58%

▲+3.94 pp QoQ

Shares Held by Institutions

454.00Mn

of 480.00Mn outstanding

▲+4.21% QoQ

Shares Outstanding

480.00Mn

26.00Mn held outside 13F filers

Institutional Investors

1,501

filed 13F for Jun 2026

▼-42 vs prior quarter

Net Shares Added (QoQ)

+18.34Mn

accumulated since last quarter

Value of Holdings

$77.50Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Marsh & Mclennan Companies, Inc. (NYSE:MRSH) showed up in the 13F filings of 1,501 institutional investors as of June 2026.

Their combined ownership stood at 94.6% of outstanding shares in June 2026, up from 90.6% in March 2026.
Their total shares held in MRSH increased 4.21% quarter over quarter, and separately, investors owning Marsh & Mclennan Companies decreased 6.83% from a year ago.
During the quarter, 626 of these 1,501 funds increased positions in MRSH, 653 reduced exposure, and 222 held steady.
In total, institutional investors held 454.0Mn shares in Marsh & Mclennan Companies as of June 2026, up by 18.34Mn shares quarter on quarter, and up 13.23Mn shares year over year.
As of June 30, 2026, the biggest holder of Marsh & Mclennan Companies is BlackRock, Inc. at 39.5Mn shares, representing 8.23% of shares outstanding.
The largest buyers of Marsh & Mclennan Companies for the quarter ending June 2026 were Corient Private Wealth LP (12.62Mn), NORGES BANK (6.26Mn), EdgePoint Investment Group Inc. (3.82Mn), HARRIS ASSOCIATES L P (3.52Mn), Sixth Street Partners Management Company, L.P. (3.07Mn).
The largest sellers of Marsh & Mclennan Companies for the quarter ending June 2026 were FMR LLC (3.23Mn), BlackRock, Inc. (2.56Mn), Clearbridge Investments, LLC (1.72Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (1.69Mn), Mawer Investment Management Ltd. (1.6Mn).
Marsh & Mclennan Companies's 10 largest shareholders as of June 2026 include BlackRock, Inc. (39.5Mn), VANGUARD CAPITAL MANAGEMENT LLC (31.47Mn), State Street Corp (22.4Mn), Capital World Investors (18.12Mn), WELLINGTON MANAGEMENT GROUP LLP (16.98Mn), Capital International Investors (15.73Mn), GEODE CAPITAL MANAGEMENT, LLC (13.51Mn), PRICE T ROWE ASSOCIATES INC /MD/ (13.44Mn), Corient Private Wealth LP (12.85Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (12.57Mn) per Business Quant data.

Form 13F Holdings

1,499 Institutional Holders

Report period 30 Jun, 2026

Total shares held 454.00Mn

Of outstanding 94.58%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	39,502,046	8.23%	▼2,559,630	-6.09%	$6.58Bn
2	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	31,472,575	6.56%	▲4,901	+0.02%	$5.25Bn
3	State Street Corp	0000093751	22,401,676	4.67%	▲330,731	+1.50%	$3.73Bn
4	Capital World Investors	0001422849	18,122,340	3.78%	▲153,158	+0.85%	$3.02Bn
5	WELLINGTON MANAGEMENT GROUP LLP	0000902219	16,975,238	3.54%	▼395,471	-2.28%	$2.83Bn
6	Capital International Investors	0001562230	15,729,457	3.28%	▲15,604	+0.10%	$2.62Bn
7	GEODE CAPITAL MANAGEMENT, LLC	0001214717	13,510,274	2.81%	▲106,102	+0.79%	$2.25Bn
8	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	13,438,662	2.80%	▲2,462,376	+22.43%	$2.24Mn
9	Corient Private Wealth LP	0001948780	12,847,045	2.68%	▲12,624,363	+5,669.23%	$67.21Mn
10	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	12,570,512	2.62%	▲142,566	+1.15%	$2.10Bn
11	Capital Research Global Investors	0001422848	10,973,649	2.29%	▼327,539	-2.90%	$1.83Bn
12	HARRIS ASSOCIATES L P	0000813917	8,687,496	1.81%	▲3,518,377	+68.07%	$1.45Bn
13	Artisan Partners Limited Partnership	0001466153	7,269,246	1.51%	▲2,393,389	+49.09%	$1.21Bn
14	FMR LLC	0000315066	6,954,123	1.45%	▼3,226,582	-31.69%	$1.16Bn
15	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	0000912938	6,507,415	1.36%	▼1,692,894	-20.64%	$1.09Bn
16	Morgan Stanley	0000895421	6,314,085	1.32%	▼159,907	-2.47%	$1.05Bn
17	NORGES BANK	0001374170	6,255,525	1.30%	▲6,255,525	0.00%	$1.04Bn
18	Ameriprise Financial Inc	0000820027	5,535,138	1.15%	▲46,601	+0.85%	$922.15Mn
19	Northern Trust Corp	0000073124	4,888,165	1.02%	▼76,914	-1.55%	$814.71Mn
20	Jpmorgan Chase & Co	0000019617	4,730,329	0.99%	▼1,363,063	-22.37%	$788.59Mn

Showing 1 to 20 of 1,499 holders