Marsh & Mclennan Companies MRSH Institutional Ownership

NYSE MRSH

$199.20 +8.64 (+4.53%)

As of: Oct 22, 2026 · 3:59 PM EDT

Institutions by Trading Activity

1,496 Institutions

Increased 624 41.7%

Unchanged 220 14.7%

Reduced 652 43.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

93.92%

▲+3.29 pp QoQ

Shares Held by Institutions

450.80Mn

of 480.00Mn outstanding

▲+2.77% QoQ

Shares Outstanding

480.00Mn

29.20Mn held outside 13F filers

Institutional Investors

1,496

filed 13F for Jun 2026

▼-44 vs prior quarter

Net Shares Added (QoQ)

+12.14Mn

accumulated since last quarter

Value of Holdings

$85.90Bn

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

Updated Oct 21, 2026

Marsh & McLennan Companies, Inc. (NYSE:MRSH) counted 1,496 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

Collectively, these holders controlled 93.92% of Marsh & McLennan Companies' outstanding shares in Q2 2026, up from 90.63% in Q1 2026.
Total shares held in MRSH rose 2.77% from Q1 2026; the number of holders fell 7.02% from Q2 2025.
Among the 1,496 holders of Marsh & McLennan Companies, 624 added to their positions, 652 reduced their stakes and 220 left their positions unchanged.
In total, institutional investors held 450.8Mn shares of Marsh & McLennan Companies at the end of Q2 2026, up 12.14Mn from the prior quarter and up 10.02Mn from a year earlier.
BlackRock, Inc. was the top holder of Marsh & McLennan Companies as of June 30, 2026, with 39.5Mn shares, or 8.23% of shares outstanding.
Among existing holders, the largest additions to Marsh & McLennan Companies in Q2 2026 came from Corient Private Wealth LP (+12.62Mn shares), Harris Associates L.P. (+3.52Mn shares), T. Rowe Price Associates Inc (+2.46Mn shares), Artisan Partners Limited Partnership (+2.39Mn shares) and Primecap Management Co (+1.43Mn shares).
Holders that trimmed the most shares of Marsh & McLennan Companies in Q2 2026 while keeping a position were FMR LLC (-3.23Mn shares), BlackRock, Inc. (-2.56Mn shares), Clearbridge Investments, LLC (-1.72Mn shares), Massachusetts Financial Services Co (-1.69Mn shares) and Mawer Investment Management Ltd. (-1.6Mn shares).
Business Quant data shows the 10 biggest positions in Marsh & McLennan Companies as of Q2 2026 were held by BlackRock, Inc. (39.5Mn shares), Vanguard Capital Management LLC (31.47Mn shares), State Street Corp (22.4Mn shares), Capital World Investors (18.12Mn shares), Wellington Management Group LLP (16.98Mn shares), Capital International Investors (15.73Mn shares), Geode Capital Management, LLC (13.51Mn shares), T. Rowe Price Associates Inc (13.44Mn shares), Corient Private Wealth LP (12.85Mn shares) and Vanguard Portfolio Management LLC (12.57Mn shares).

Form 13F Holdings

1,498 Institutional Holders

Report period 30 Jun, 2026

Total shares held 450.80Mn

Of outstanding 93.92%

#	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 1,498 holders