Ticker · CUSIP 571748102

MRSH

MARSH & MCLENNAN COS INC

Financial Services·Insurance Brokers

···Share

Holders (tracked)

Combined shares

44,378,821

Combined value

$8.23B

Last close

$175.80

Quarter

2025Q4

Price is -5.2% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$175.80-40.13 (-18.59%)H $230.45 · L $168.15 · Avg Vol 2.7M

Tracked holders · last 8 quarters

+7 vs previous quarter over the last 8.

SEC event timeline

30 events

Ken Griffin (Citadel Advisors) added2026-02-17
+430,842 shares · 2025Q4
Position
Steve Cohen (Point72) opened position2026-02-17
+184,863 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+868,114 shares · 2025Q4
Position
Wellington Management added2026-02-17
+906,402 shares · 2025Q4
Position
Longview Partners (Guernsey) trimmed2026-02-17
−71,800 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) opened position2026-02-17
+220,096 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+445,558 shares · 2025Q4
Position
D.E. Shaw & Co. added2026-02-17
+19,345 shares · 2025Q4
Position
Two Sigma Investments added2026-02-17
+149,771 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+540,513 shares · 2025Q4
Position
Ray Dalio (Bridgewater Associates) trimmed2026-02-13
−36,290 shares · 2025Q4
Position
Renaissance Technologies trimmed2026-02-12
−722,700 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+8,386,530 shares · 2025Q4
Position
Ken Fisher (Fisher Asset Mgmt) added2026-02-09
+580 shares · 2025Q4
Position
Tom Gayner (Markel Group) added2026-02-06
+6,750 shares · 2025Q4
Position
Baillie Gifford & Co added2026-01-23
+4,806 shares · 2025Q4
Position
Paul Tudor Jones (Tudor Investment) exited2025-12-09
−96,609 shares · 2025Q3
Position
AQR Capital Management added2025-11-14
+602,056 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−509,556 shares · 2025Q3
Position
Steve Cohen (Point72) exited2025-11-14
−167,460 shares · 2025Q3
Position
Two Sigma Investments added2025-11-14
+106,857 shares · 2025Q3
Position
D.E. Shaw & Co. added2025-11-14
+1,372,137 shares · 2025Q3
Position
T. Rowe Price trimmed2025-11-14
−1,693,073 shares · 2025Q3
Position
Wellington Management added2025-11-14
+1,260,434 shares · 2025Q3
Position
Ray Dalio (Bridgewater Associates) opened position2025-11-13
+62,067 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+146,369 shares · 2025Q3
Position
Longview Partners (Guernsey) trimmed2025-11-13
−180,221 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−6,076,595 shares · 2025Q3
Position
Ken Fisher (Fisher Asset Mgmt) trimmed2025-11-12
−121 shares · 2025Q3
Position
Norges Bank (Norway SWF) trimmed2025-11-12
−295,267 shares · 2024Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for MRSH →

Follow-the-investor returns

If you'd copied each holder of MRSH…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Tom Gayner (Markel Group)	2016Q1	$87.64	+100.6%	$133.9M
Mario Gabelli (GAMCO)	2016Q1	$112.27	+56.6%	$3.4M
T. Rowe Price	2016Q1	$135.37	+29.9%	$1.62B
Wellington Management	2016Q1	$143.21	+22.8%	$2.81B
Longview Partners (Guernsey)	2021Q2	$148.90	+18.1%	$354.6M
Ken Fisher (Fisher Asset Mgmt)	2016Q2	$177.33	-0.9%	$383K
AQR Capital Management	2016Q1	$182.74	-3.8%	$259.8M
Ken Griffin (Citadel Advisors)	2016Q1	$185.71	-5.3%	$20.6M
Ken Griffin (Citadel Advisors)	2016Q1	$185.71	-5.3%	$20.6M
Ken Griffin (Citadel Advisors)	2016Q1	$185.71	-5.3%	$20.6M
Izzy Englander (Millennium Mgmt)	2016Q1	$185.86	-5.4%	$127.4M
Izzy Englander (Millennium Mgmt)	2016Q1	$185.86	-5.4%	$127.4M
Izzy Englander (Millennium Mgmt)	2016Q1	$185.86	-5.4%	$127.4M
Paul Tudor Jones (Tudor Investment)	2016Q4	$186.00	-5.5%	$1.5M
Paul Tudor Jones (Tudor Investment)	2016Q4	$186.00	-5.5%	$1.5M
Paul Tudor Jones (Tudor Investment)	2016Q4	$186.00	-5.5%	$1.5M
Steve Cohen (Point72)	2016Q4	$187.25	-6.1%	$668K
Steve Cohen (Point72)	2016Q4	$187.25	-6.1%	$668K
Steve Cohen (Point72)	2016Q4	$187.25	-6.1%	$668K
Ray Dalio (Bridgewater Associates)	2016Q1	$201.19	-12.6%	$4.5M
Renaissance Technologies	2016Q3	$208.53	-15.7%	$69.9M
Two Sigma Investments	2016Q1	$211.71	-17.0%	$219.7M
D.E. Shaw & Co.	2016Q1	$213.55	-17.7%	$456.4M
Baillie Gifford & Co	2024Q3	$218.86	-19.7%	$15.3M
Norges Bank (Norway SWF)	2016Q1	$32661.83	-99.5%	$1.47B

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions3

Norges Bank (Norway SWF)
+8,386,530
$1.56B
Paul Tudor Jones (Tudor Investment)
+220,096
$40.8M
Steve Cohen (Point72)
+184,863
$34.3M

Added to10

Wellington Management
+906,402
$168.2M
Izzy Englander (Millennium Mgmt)
+540,513
$100.3M
AQR Capital Management
+445,558
$82.7M
Ken Griffin (Citadel Advisors)
+430,842
$79.9M
Two Sigma Investments
+149,771
$27.8M
D.E. Shaw & Co.
+19,345
$3.6M
Tom Gayner (Markel Group)
+6,750
$1.3M
Baillie Gifford & Co
+4,806
$892K
T. Rowe Price
+868,114
$161K
Ken Fisher (Fisher Asset Mgmt)
+580
$108K

Trimmed3

Renaissance Technologies
−722,700
$134.1M
Longview Partners (Guernsey)
−71,800
$13.3M
Ray Dalio (Bridgewater Associates)
−36,290
$6.7M

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	26	89,286,079	$651.83B	—
2022Q2	23	85,320,588	$594.06B	-3
2022Q3	21	75,524,547	$11.28B	-2
2022Q4	23	76,940,725	$12.73B	+2
2023Q1	24	78,930,953	$13.15B	+1
2023Q2	22	74,806,089	$14.07B	-2
2023Q3	20	58,928,682	$11.21B	-2
2023Q4	19	62,075,554	$11.76B	-1
2024Q1	17	75,850,698	$15.62B	-2
2024Q2	20	73,368,679	$15.46B	+3
2024Q3	23	30,234,091	$6.74B	+3
2024Q4	19	22,536,976	$4.79B	-4
2025Q1	18	27,601,792	$6.74B	-1
2025Q2	22	38,026,587	$8.31B	+4
2025Q3	18	33,005,341	$6.65B	-4
2025Q4	25	44,378,821	$8.23B	+7

Who owns MRSH

25 super-investors · 2025Q4

Tracked stake

44.38M

Combined value

$8.23B

% of shares outstanding

—

shares-out unknown

Quarter action mix

New7Added14Trim3Held1

#	Manager	Shares	Value	% of book	Last action
1	Wellington Management	16.00M	$2.97B	0.5%	Added+906.4K
2	T. Rowe Price	9.22M	$1.71B	0.2%	Added+868.1K
3	Norges Bank Norway SWF	8.39M	$1.56B	0.2%	New+8.39M
4	D.E. Shaw & Co.	2.60M	$482M	0.3%	Added+19.3K
5	Longview Partners Guernsey	2.02M	$374M	3.9%	Trim−71.8K
6	AQR Capital Management	1.48M	$274M	0.1%	Added+445.6K
7	Two Sigma Investments	1.25M	$232M	0.3%	Added+149.8K
8	Ken Griffin Citadel Advisors	822.4K	$153M	0.0%	Added+430.8K
9	Tom Gayner Markel Group	761.8K	$141M	1.1%	Added+6.8K
10	Izzy Englander Millennium Mgmt	724.6K	$134M	0.1%	Added+540.5K
11	Renaissance Technologies	397.6K	$74M	0.1%	Trim−722.7K
12	Paul Tudor Jones Tudor Investment	220.1K	$41M	0.1%	New+220.1K
13	Steve Cohen Point72	184.9K	$34M	0.0%	New+184.9K
14	Ken Griffin Citadel Advisors	117.4K	$22M	0.0%	Added+430.8K
15	Baillie Gifford & Co	87.2K	$16M	0.0%	Added+4.8K
16	Ray Dalio Bridgewater Associates	25.8K	$5M	0.0%	Trim−36.3K
17	Izzy Englander Millennium Mgmt	19.9K	$4M	0.0%	Added+540.5K
18	Mario Gabelli GAMCO	19.3K	$4M	0.0%	Held
19	Steve Cohen Point72	16.4K	$3M	0.0%	New+184.9K
20	Izzy Englander Millennium Mgmt	12.9K	$2M	0.0%	Added+540.5K
21	Paul Tudor Jones Tudor Investment	8.4K	$2M	0.0%	New+220.1K
22	Ken Griffin Citadel Advisors	7.6K	$1M	0.0%	Added+430.8K
23	Steve Cohen Point72	3.8K	$705K	0.0%	New+184.9K
24	Paul Tudor Jones Tudor Investment	3.2K	$594K	0.0%	New+220.1K
25	Ken Fisher Fisher Asset Mgmt	2.2K	$404K	0.0%	Added+580

Recent moves

20 transactions

TRIMLongview Partners (Guernsey)
−71,800 · 2025Q4
ADDD.E. Shaw & Co.
+19,345 · 2025Q4
ADDAQR Capital Management
+445,558 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+220,096 · 2025Q4
ADDTwo Sigma Investments
+149,771 · 2025Q4
NEWSteve Cohen (Point72)
+184,863 · 2025Q4
ADDKen Griffin (Citadel Advisors)
+430,842 · 2025Q4
ADDT. Rowe Price
+868,114 · 2025Q4
ADDWellington Management
+906,402 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+540,513 · 2025Q4
TRIMRay Dalio (Bridgewater Associates)
−36,290 · 2025Q4
TRIMRenaissance Technologies
−722,700 · 2025Q4
NEWNorges Bank (Norway SWF)
+8,386,530 · 2025Q4
ADDKen Fisher (Fisher Asset Mgmt)
+580 · 2025Q4
ADDTom Gayner (Markel Group)
+6,750 · 2025Q4
ADDBaillie Gifford & Co
+4,806 · 2025Q4
SOLDPaul Tudor Jones (Tudor Investment)
−96,609 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−509,556 · 2025Q3
SOLDSteve Cohen (Point72)
−167,460 · 2025Q3
ADDTwo Sigma Investments
+106,857 · 2025Q3

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