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MRSH in the 13F filings

Marsh & Mclennan Cos Inc · CUSIP 571748102

Sector · InsuranceTheme · Financial services· L3VLUP-defined
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Dec 2024
the date the book describes
Filed
5 Nov 2026
latest of these filings; the earliest 31 Jan 2025
Managers listing it
30
at least, of 95 tracked, among listed positions
Comparable managers
94
filed both Q3 2024 and Q4 2024; 26 listed it in both
Shares listed
87,271,796
combined, among listed positions
Reported value
$18.5bn
combined, at the quarter end

Among the 94 comparable managers: 17 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.

Managers listing MRSH in Q4 2024

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2024, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

30 of 30 holders

ActionFiling
Fidelity (FMR LLC)21,234,404$4.5bn0.27%Trimmed-210,7065 Nov 2026 (the filing on sec.gov)
Capital World Investors17,527,365$3.7bn0.57%Trimmed-55,94213 Feb 2025 (the filing on sec.gov)
MFS Investment Management10,346,113$2.2bn0.69%Trimmed-478,47412 Feb 2025 (the filing on sec.gov)
T. Rowe Price Associates Inc10,151,020$2.2bn0.25%Added+96,75014 Feb 2025 (the filing on sec.gov)
Wellington Management Group LLP8,309,240$1.8bn0.32%Trimmed-247,21912 Feb 2025 (the filing on sec.gov)
Artisan Partners LP3,485,200$740m1.11%Added+4,26612 Feb 2025 (the filing on sec.gov)
Invesco Ltd2,827,608$601m0.11%Added+258,38413 Feb 2025 (the filing on sec.gov)
Capital Research Global Investors2,420,723$514m0.11%Added+14,43213 Feb 2025 (the filing on sec.gov)
Janus Henderson Group Ltd2,065,496$439m0.22%Trimmed-105,64114 Feb 2025 (the filing on sec.gov)
Acadian Asset Management LLC1,568,640$333m0.97%Trimmed-100,84811 Feb 2025 (the filing on sec.gov)
AllianceBernstein LP1,338,413$284m0.10%Trimmed-12,37512 Feb 2025 (the filing on sec.gov)
Voloridge Investment Management LLC1,037,566$220m0.78%Added+52,80214 Feb 2025 (the filing on sec.gov)
Millennium Management LLC776,188$165m0.08%Addedn.a.14 Feb 2025 (the filing on sec.gov)
Markel Group Inc735,500$156m1.38%Added+13,0007 Feb 2025 (the filing on sec.gov)
Two Sigma Investments LP532,990$113m0.25%Added+352,29214 Feb 2025 (the filing on sec.gov)
Renaissance Technologies LLC503,100$107m0.16%Added+193,20013 Feb 2025 (the filing on sec.gov)
Verition Fund Management LLC465,576$99m0.39%Added+261,20914 Feb 2025 (the filing on sec.gov)
Squarepoint Ops LLC462,439$98m0.10%Added+223,06414 Feb 2025 (the filing on sec.gov)
AQR Capital Management LLC414,657$88m0.11%Added+41,33714 Feb 2025 (the filing on sec.gov)
D. E. Shaw & Co.345,071$73m0.05%Trimmed-81,09514 Feb 2025 (the filing on sec.gov)
Two Sigma Advisers LP274,100$58m0.13%Addedn.a.14 Feb 2025 (the filing on sec.gov)
Baillie Gifford & Co108,919$23munder 0.1%Added+23,31931 Jan 2025 (the filing on sec.gov)
Freestone Grove Partners LP99,473$21m0.26%Heldn.a.14 Feb 2025 (the filing on sec.gov)
Man Group PLC80,619$17munder 0.1%Trimmed-16,99014 Feb 2025 (the filing on sec.gov)
Quantbot Technologies LP64,356$14m0.50%Trimmed-5,52511 Feb 2025 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2024 to Q4 2024, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (1)

Exited (0)

No exit shown by a manager’s own filing.

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
28 in Q3 2024 to 24 in Q2 2026

Tracked managers listing it, at least.

0102030402014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
MRSH by quarter
QuarterHoldersReported valueBuyersSellers
Q2 201315$6.2bnn.a.n.a.
Q3 201312$6.8bnn.a.n.a.
Q4 201313$7.3bnn.a.n.a.
Q1 201417$7.5bnn.a.n.a.
Q2 201411$7.7bnn.a.n.a.
Q3 201417$8.0bnn.a.n.a.
Q4 201419$8.6bnn.a.n.a.
Q1 201517$8.3bnn.a.n.a.
Q2 201520$8.6bnn.a.n.a.
Q3 201521$8.0bnn.a.n.a.
Q4 201519$8.8bnn.a.n.a.
Q1 201619$9.7bnn.a.n.a.
Q2 201616$10.8bnn.a.n.a.
Q3 201620$9.4bnn.a.n.a.
Q4 201627$8.7bnn.a.n.a.
Q1 201724$9.4bnn.a.n.a.
Q2 201723$9.7bnn.a.n.a.
Q3 201717$10.3bnn.a.n.a.
Q4 201721$9.8bnn.a.n.a.
Q1 201819$10.0bnn.a.n.a.
Q2 201816$9.9bnn.a.n.a.
Q3 201816$9.0bnn.a.n.a.
Q4 201821$8.9bnn.a.n.a.
Q1 201923$10.2bnn.a.n.a.
Q2 201923$11.0bnn.a.n.a.
Q3 201918$11.5bnn.a.n.a.
Q4 201920$13.1bnn.a.n.a.
Q1 202023$9.8bnn.a.n.a.
Q2 202020$11.8bnn.a.n.a.
Q3 202021$12.5bnn.a.n.a.
Q4 202025$13.5bnn.a.n.a.
Q1 202123$14.2bnn.a.n.a.
Q2 202125$16.2bnn.a.n.a.
Q3 202126$16.5bnn.a.n.a.
Q4 202127$17.9bnn.a.n.a.
Q1 202226$17.2bnn.a.n.a.
Q2 202225$15.2bnn.a.n.a.
Q3 202228$13.6bnn.a.n.a.
Q4 202227$14.6bnn.a.n.a.
Q1 202330$14.8bnn.a.n.a.
Q2 202327$16.4bnn.a.n.a.
Q3 202327$16.5bnn.a.n.a.
Q4 202321$16.5bn147
Q1 202425$17.8bn1511
Q2 202426$18.3bn179
Q3 202428$19.2bn1514
Q4 202430$18.5bn1712
Q1 202525$22.7bn1016
Q2 202531$21.5bn2110
Q3 202530$19.9bn1712
Q4 202530$18.2bn3014
Q1 202623$18.4bn1627
Q2 202624$17.9bn2318

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

MRSH and V →MRSH and AXP →MRSH and BAC →Choose a stock to compare with MRSH →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own MRSH, latest filings →Back to the 13F Explorer →