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ACGL in the 13F filings

Arch Cap Group LTD · CUSIP G0450A105

Sector · InsuranceTheme · Financial services· L3VLUP-defined
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
30 Jun 2025
the date the book describes
Filed
14 Aug 2025
latest of these filings; the earliest 11 Aug 2025
Managers listing it
13
at least, of 95 tracked, among listed positions
Comparable managers
95
filed both Q1 2025 and Q2 2025; 11 listed it in both
Shares listed
37,781,233
combined, among listed positions
Reported value
$3.4bn
combined, at the quarter end

Among the 95 comparable managers: 10 buyers (opened or added shares) and 4 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 ACGL in Q2 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

13 of 13 holders

ActionFiling
Artisan Partners LP23,833,290$2.2bn3.18%Added+408,95012 Aug 2025 (the filing on sec.gov)
Egerton Capital UK LLP4,240,966$386m3.96%Trimmed-84,25112 Aug 2025 (the filing on sec.gov)
Invesco Ltd4,087,514$372m0.06%Added+90,82413 Aug 2025 (the filing on sec.gov)
Millennium Management LLC1,844,422$168m0.08%Addedn.a.14 Aug 2025 (the filing on sec.gov)
AQR Capital Management LLC1,117,741$102m0.08%Trimmed-43,61914 Aug 2025 (the filing on sec.gov)
Two Sigma Investments LP892,218$81m0.14%Added+533,08314 Aug 2025 (the filing on sec.gov)
Man Group PLC692,044$63m0.12%Added+500,54714 Aug 2025 (the filing on sec.gov)
Two Sigma Advisers LP452,100$41m0.08%Added+265,80014 Aug 2025 (the filing on sec.gov)
Bridgewater Associates LP194,325$18m0.07%Trimmed-54,85713 Aug 2025 (the filing on sec.gov)
Voloridge Investment Management LLC154,744$14m0.05%Newnew14 Aug 2025 (the filing on sec.gov)
ExodusPoint Capital Management LP147,595$13m0.12%Added+6,46313 Aug 2025 (the filing on sec.gov)
Quantbot Technologies LP71,237$6.5m0.17%Added+51,80913 Aug 2025 (the filing on sec.gov)
Holocene Advisors LP53,037$4.8munder 0.1%Added+95014 Aug 2025 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2025 to Q2 2025, 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 (1)

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.
12 in Q3 2024 to 8 in Q2 2026

Tracked managers listing it, at least.

051015202014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ACGL by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20133$1.2bnn.a.n.a.
Q3 20134$1.2bnn.a.n.a.
Q4 20133$1.3bnn.a.n.a.
Q1 20143$1.3bnn.a.n.a.
Q2 20144$1.3bnn.a.n.a.
Q3 20147$1.4bnn.a.n.a.
Q4 20147$1.5bnn.a.n.a.
Q1 20156$1.5bnn.a.n.a.
Q2 20155$1.5bnn.a.n.a.
Q3 20156$1.8bnn.a.n.a.
Q4 20157$1.6bnn.a.n.a.
Q1 20166$1.5bnn.a.n.a.
Q2 201610$1.6bnn.a.n.a.
Q3 20167$1.6bnn.a.n.a.
Q4 20169$1.8bnn.a.n.a.
Q1 20178$1.9bnn.a.n.a.
Q2 201716$2.3bnn.a.n.a.
Q3 201711$3.0bnn.a.n.a.
Q4 201710$2.9bnn.a.n.a.
Q1 201814$2.9bnn.a.n.a.
Q2 201810$2.6bnn.a.n.a.
Q3 20189$2.4bnn.a.n.a.
Q4 20188$2.1bnn.a.n.a.
Q1 20198$2.6bnn.a.n.a.
Q2 201912$2.8bnn.a.n.a.
Q3 201911$3.0bnn.a.n.a.
Q4 20199$3.0bnn.a.n.a.
Q1 202016$2.0bnn.a.n.a.
Q2 202016$2.1bnn.a.n.a.
Q3 202014$2.2bnn.a.n.a.
Q4 202010$2.5bnn.a.n.a.
Q1 202114$2.9bnn.a.n.a.
Q2 20218$2.7bnn.a.n.a.
Q3 20217$2.6bnn.a.n.a.
Q4 20217$3.0bnn.a.n.a.
Q1 202210$3.2bnn.a.n.a.
Q2 202210$3.4bnn.a.n.a.
Q3 202211$3.8bnn.a.n.a.
Q4 20229$4.7bnn.a.n.a.
Q1 202310$4.0bnn.a.n.a.
Q2 202310$4.1bnn.a.n.a.
Q3 20239$4.1bnn.a.n.a.
Q4 202314$3.6bn104
Q1 202416$4.0bn89
Q2 202411$4.3bn56
Q3 202412$4.4bn58
Q4 20249$3.5bn38
Q1 202513$3.5bn85
Q2 202513$3.4bn104
Q3 202514$3.4bn86
Q4 202512$3.3bn1718
Q1 202611$3.3bn1122
Q2 20268$3.2bn1415

Compare with…

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

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

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 ACGL, latest filings →Back to the 13F Explorer →