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Arch Capital

842 hedge funds and large institutions have $29.7B invested in Arch Capital in 2025 Q3 according to their latest regulatory filings, with 86 funds opening new positions, 320 increasing their positions, 329 reducing their positions, and 88 closing their positions.

New
Increased
Maintained
Reduced
Closed

31% more call options, than puts

Call options by funds: $13.9M | Put options by funds: $10.7M

2% less first-time investments, than exits

New positions opened: 86 | Existing positions closed: 88

3% less repeat investments, than reductions

Existing positions increased: 320 | Existing positions reduced: 329

3% less capital invested

Capital invested by funds: $30.6B → $29.7B (-$968M)

1% less funds holding

Funds holding: 852842 (-10)

2.31% less ownership

Funds ownership: 89.76%87.46% (-2.3%)

8% less funds holding in top 10

Funds holding in top 10: 1312 (-1)

Holders
842
Holders Change
-10
Holders Change %
-1.17%
% of All Funds
11.05%
Holding in Top 10
12
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-7.69%
% of All Funds
0.16%
New
86
Increased
320
Reduced
329
Closed
88
Calls
$13.9M
Puts
$10.7M
Net Calls
+$3.28M
Net Calls Change
+$21.3M
Name Holding Trade Value Shares
Change
Change in
Stake
NP
851
Nilsine Partners
Colorado
-$2.84M -31,195 Closed
SPS
852
Susquehanna Portfolio Strategies
Pennsylvania
-$2.75M -30,247 Closed
TC
853
Tsai Capital
New York
-$2.7M -29,612 Closed
CP
854
Cumberland Partners
Ontario, Canada
-$2.52M -27,680 Closed
MF
855
Magnetar Financial
Illinois
-$2.3M -25,246 Closed
LOAMS
856
Lombard Odier Asset Management (Switzerland)
Switzerland
-$2.29M -25,192 Closed
CC
857
Centiva Capital
New York
-$2.23M -24,527 Closed
QCM
858
Qsemble Capital Management
New York
-$2.19M -24,053 Closed
SICM
859
Sustainable Insight Capital Management
New York
-$2.14M -23,459 Closed
SC
860
Soundwatch Capital
Connecticut
-$13.4M -21,715 Closed
HF
861
HRT Financial
New York
-$1.69M -18,538 Closed
MYIA
862
Mount Yale Investment Advisors
Colorado
-$1.66M -18,230 Closed
DACS
863
Dymon Asia Capital (Singapore)
Singapore
-$1.64M -18,000 Closed
NEI
864
Northwest & Ethical Investments
Ontario, Canada
-$1.63M -17,926 Closed
VIA
865
Virtus Investment Advisers
Connecticut
-$1.39M -15,279 Closed
DAM
866
Deltec Asset Management
New York
-$1.34M -14,750 Closed
SC
867
SummitTX Capital
Texas
-$1.19M -13,100 Closed
Axa
868
Axa
France
-$1.04M -11,397 Closed
CCIA
869
Campbell & Co Investment Adviser
Maryland
-$1.02M -11,243 Closed
CGIM
870
Capital Group Investment Management
Singapore
-$1.01M -11,048 Closed
NRD
871
Nebula Research & Development
New York
-$854K -9,382 Closed
GCP
872
GSA Capital Partners
United Kingdom
-$798K -8,761 Closed
JG
873
Jain Global
New York
-$783K -8,600 Closed
FC
874
Farringdon Capital
United Kingdom
-$771K -8,473 Closed
BPC
875
Bryce Point Capital
New York
-$691K -7,584 Closed

ACGL Hedge Fund Activity: Q3 2025 in Review

842 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Arch Capital (ACGL) for Q3 2025, worth a combined $29.7B — down 3.2% from $30.6B a quarter earlier.

Sellers outnumbered buyers: 88 funds closed out of ACGL and 86 opened new positions — a net loss of 2 holders — while 329 trimmed existing stakes and 320 added.

The largest buyer was Cooke & Bieler, opening a new position worth an estimated $208M. The largest seller was Capital International Investors, cutting an estimated $593M.

  • 842 institutional investors held Arch Capital (ACGL) as of Q3 2025, down from 852 in Q2 2025.
  • Funds reported $29.7B of Arch Capital stock for Q3 2025, down 3.2% quarter-over-quarter.
  • 86 funds opened new Arch Capital positions in Q3 2025 and 88 closed out, a net change of -2 holders.
  • The largest Arch Capital buyer in Q3 2025 was Cooke & Bieler, an estimated $208M added.
  • The largest Arch Capital seller in Q3 2025 was Capital International Investors, an estimated $593M sold.

Based on aggregated 13F filings for Q3 2025.