$MRSH

$194.72 -$2.76 (1.4%) Close

$MRSH Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 475.5M shares outstanding

Who owns MRSH?

By type of holder

Institutions 92.2% Insiders 0.1% Everyone else 7.7%

Concentration Top 10 holders own 41.0%

BlackRock, Inc. 8.3% · Vanguard Capital Management LLC 6.6%

Institutional ownership

92.2%

-0.1 pts vs last qtr

Institutional holders

1,496

-53 vs last qtr

Net shares bought

−636.1K

by institutions in Q2 2026

New / sold out

143 / 196

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +6.3M
EdgePoint Investment Group Inc. NEW +3.8M

Biggest sellers in Q2 2026

FMR LLC −3.2M
BlackRock, Inc. −2.6M

Who is planning to sell?

Notices of proposed sale, last 12 months

$20M

13 notices from 9 people

Shares covered

110.2K

0.02% of the company

Arranged in advance

70%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Doyle John Q Officer 10b5-1 $12.7M
Yates Lloyd M Director $2.11M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

−5.7%

−0.65% a year

Each share's claim on the business

+6.1%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$10B vs $2.83B

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years86% 3–5 years2% 1–3 years5% Under 1 year7%

Quarterly turnover

8.1%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting MRSH on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	39.5M	8.31%	−2.6M (−6.1%)	≤2021	0.1%
Shares held by quarter Peak holding42.1M (Q1'26) Change over 8 quarters−2.1M Share of the company8.310% BlackRock, Inc.'s full portfolio →
VC Vanguard Capital Management LLC	31.5M	6.62%	+4.9K (+0.0%)	≤2021	0.1%
Shares held by quarter Peak holding31.5M (Q2'26) Change over 8 quarters+31.5M Share of the company6.620% Vanguard Capital Management LLC's full portfolio →

BlackRock, Inc.

39.5M

% of company

8.31%

Change vs last qtr

−2.6M (−6.1%)

Held since

≤2021

Vanguard Capital Management LLC

31.5M

% of company

6.62%

Change vs last qtr

+4.9K (+0.0%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Marsh & McLennan Companies, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting MRSH on Form N-PORT; together they hold 43.6% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
WM Washington Mutual Investors Fund Washington Mutual Investors Fund	$3.85B	20.3M	4.26%	1.76%	July 31, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$2.55B	15.3M	3.22%	0.11%	June 30, 2026

Washington Mutual Investors Fund

Position value

$3.85B

% of company

4.26%

% of the fund

1.76%

As of

July 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$2.55B

% of company

3.22%

% of the fund

0.11%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Marsh & McLennan Companies, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
DJ Doyle John Q Insider	116.8K	0.02%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.020% Doyle John Q's insider activity →
FO Fanjul Oscar Insider	53.7K	0.01%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.010% Fanjul Oscar's insider activity →

Doyle John Q

Insider

116.8K

% of company

0.02%

Change vs last qtr

—

Held since

—

Fanjul Oscar

Insider

53.7K

% of company

0.01%

Change vs last qtr

—

Held since

—

18 more holders behind a free account

See every insider and 5%+ holder of Marsh & McLennan Companies, Inc..

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