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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
Robeco Institutional Asset Management
51
Robeco Institutional Asset Management
Netherlands
$93.4M +$46M +512,879 +99%
WorldQuant Millennium Advisors
52
WorldQuant Millennium Advisors
New York
$92.3M +$27.8M +309,844 +44%
Sumitomo Mitsui Trust Group
53
Sumitomo Mitsui Trust Group
Japan
$90.7M -$4.22M -47,056 -4%
Lord, Abbett & Co
54
Lord, Abbett & Co
New Jersey
$90.1M +$7.36M +82,069 +9%
AssetMark Inc
55
AssetMark Inc
California
$89.9M -$8.82M -98,342 -9%
Stifel Financial
56
Stifel Financial
Missouri
$88.6M -$1.26M -14,057 -1%
BNP Paribas Asset Management
57
BNP Paribas Asset Management
France
$87.1M +$7.38M +82,333 +9%
AQR Capital Management
58
AQR Capital Management
Connecticut
$84.8M -$15.9M -177,600 -16%
Marshall Wace
59
Marshall Wace
United Kingdom
$84.8M +$81.7M +911,036 +3,918%
Millennium Management
60
Millennium Management
New York
$83.6M -$82.7M -922,484 -50%
GQG Partners
61
GQG Partners
Florida
$78.6M +$143K +1,596 +0.2%
Man Group
62
Man Group
United Kingdom
$75.6M +$12.7M +141,312 +20%
Franklin Resources
63
Franklin Resources
California
$72.8M +$1.08M +12,060 +2%
Mitsubishi UFJ Asset Management
64
Mitsubishi UFJ Asset Management
Japan
$67.7M +$2.57M +28,618 +4%
Ameriprise
65
Ameriprise
Minnesota
$65.9M -$57.6M -642,005 -47%
American Century Companies
66
American Century Companies
Missouri
$64.2M +$650K +7,251 +1%
William Blair Investment Management
67
William Blair Investment Management
Illinois
$62.5M -$5.67M -63,179 -8%
RhumbLine Advisers
68
RhumbLine Advisers
Massachusetts
$61.7M -$306K -3,418 -0.5%
GCM
69
Gladstone Capital Management
United Kingdom
$59.4M -$45.8M -510,947 -44%
PC
70
Port Capital
Illinois
$59M -$123K -1,374 -0.2%
National Pension Service
71
National Pension Service
South Korea
$57.1M +$2.82M +31,408 +5%
T. Rowe Price Associates
72
T. Rowe Price Associates
Maryland
$55.7M -$11.8M -131,102 -18%
D.E. Shaw & Co
73
D.E. Shaw & Co
New York
$55.7M +$24.6M +274,300 +81%
GAI
74
General American Investors
New York
$54.4M
Federated Hermes
75
Federated Hermes
Pennsylvania
$53.9M -$34.3M -382,521 -39%

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.