Company · Ownership research

MARSH & MCLENNAN COMPANIES, INC. MRSH

CIK 0000062709 · CUSIP 571748102

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 571748102 (MRSH), not CUSIP 571748902 (MRSH), CUSIP 571748952 (MRSH), and does not merge CUSIPs.

This page lists the top 20 of 1,594 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$8.64B 46,589,633 shares	0.13%	+387.10K(+0.80%)Added	SEC filing ↗ Jan 29, 2026	▾
02	BlackRock, Inc. CIK 2012383 · View history	$7.50B 40,444,949 shares	0.13%	+1.66M(+4.30%)Added	SEC filing ↗ Feb 12, 2026	▾
03	STATE STREET CORP CIK 93751 · View history	$4.06B 21,871,937 shares	0.14%	+333.92K(+1.60%)Added	SEC filing ↗ Feb 13, 2026	▾
04	Capital International Investors CIK 1562230 · View history	$3.48B 18,766,815 shares	0.55%	+176.12K(+0.90%)Added	SEC filing ↗ Feb 11, 2026	▾
05	Capital World Investors CIK 1422849 · View history	$3.14B 16,925,131 shares	0.43%	-777.77K(-4.40%)Reduced	SEC filing ↗ Feb 11, 2026	▾
06	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$2.97B 15,997,880 shares	0.52%	+906.40K(+6.00%)Added	SEC filing ↗ Feb 17, 2026	▾
07	FMR LLC CIK 315066 · View history	$2.82B 15,225,442 shares	0.14%	-1.23M(-7.50%)Reduced	SEC filing ↗ Feb 17, 2026	▾
08	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$2.15B 11,644,025 shares	0.13%	-1.32M(-10.20%)Reduced	SEC filing ↗ Feb 9, 2026	▾
09	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$1.71B 9,217,878 shares	0.18%	+868.11K(+10.40%)Added	SEC filing ↗ Feb 17, 2026	▾
10	MASSACHUSETTS FINANCIAL SERVICES CO /MA/ CIK 912938 · View history	$1.61B 8,662,457 shares	0.52%	-811.90K(-8.60%)Reduced	SEC filing ↗ Jan 22, 2026	▾
11	NORGES BANK CIK 1374170 · View history	$1.56B 8,386,530 shares	0.17%	+8.39MNew	SEC filing ↗ Feb 10, 2026	▾
12	Capital Research Global Investors CIK 1422848 · View history	$1.48B 7,987,794 shares	0.27%	-1.87M(-19.00%)Reduced	SEC filing ↗ Feb 11, 2026	▾
13	MORGAN STANLEY CIK 895421 · Amended · View history	$1.27B 6,870,731 shares	0.08%	-182.06K(-2.60%)Reduced	SEC filing ↗ May 27, 2026	▾
14	BANK OF AMERICA CORP /DE/ CIK 70858 · View history	$1.02B 5,522,563 shares	0.07%	-883.05K(-13.80%)Reduced	SEC filing ↗ Feb 17, 2026	▾
15	NORTHERN TRUST CORP CIK 73124 · View history	$982.80M 5,297,560 shares	0.13%	-326.35K(-5.80%)Reduced	SEC filing ↗ Feb 17, 2026	▾
16	Clearbridge Investments, LLC CIK 1348883 · View history	$941.81M 5,076,693 shares	0.75%	+559.58K(+12.40%)Added	SEC filing ↗ Feb 11, 2026	▾
17	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$888.46M 4,790,808 shares	0.20%	-977.18K(-16.90%)Reduced	SEC filing ↗ Feb 17, 2026	▾
18	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC CIK 861177 · View history	$843.31M 4,545,663 shares	0.18%	+1.83K(0.00%)Added	SEC filing ↗ Feb 13, 2026	▾
19	JPMORGAN CHASE & CO CIK 19617 · View history	$793.78M 4,278,658 shares	0.05%	-594.32K(-12.20%)Reduced	SEC filing ↗ Feb 11, 2026	▾
20	GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history	$744.90M 4,015,180 shares	0.11%	-1.21M(-23.10%)Reduced	SEC filing ↗ Mar 25, 2026	▾

Showing 20 / 1,594 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

1,594

Cancelled or null records excluded

Disclosed shares

435,706,184

Not deduplicated across managers

Disclosed value

$80.85B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

MARSH & MCLENNAN COMPANIES, INC. · Q4 2025

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.