Arch Capital Group Ltd.
US ˙ NasdaqGS ˙ BMG0450A1053

SecurityACGL / Arch Capital Group Ltd.
InstitutionTrexquant Investment LP
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Trexquant Investment LP closes position in ACGL / Arch Capital Group Ltd.

On May 15, 2026 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 0 shares of Arch Capital Group Ltd. (US:ACGL) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 155,758 shares of Arch Capital Group Ltd.. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ARCH CAP GROUP ORD G0450A105 0 -100.00 0
2026-02-17 2025-12-31 13F ARCH CAP GROUP ORD G0450A105 155,758 3,064 2.01 14,940 7.85 0.1332
2025-11-14 2025-09-30 13F ARCH CAP GROUP ORD G0450A105 152,694 -46,907 -23.50 13,854 -23.77 0.1426
2025-08-12 2025-06-30 13F ARCH CAP GROUP ORD G0450A105 199,601 199,601 18,174 0.2050
2024-08-13 2024-06-30 13F ARCH CAP GROUP ORD G0450A105 0 -9,362 -100.00 0 -100.00
2024-05-14 2024-03-31 13F ARCH CAP GROUP ORD G0450A105 9,362 -102,009 -91.59 865 -89.54 0.0173
2024-02-09 2023-12-31 13F ARCH CAP GROUP ORD G0450A105 111,371 111,371 8,272 0.1861
2023-11-13 2023-09-30 13F ARCH CAP GROUP ORD G0450A105 0 -48,841 -100.00 0 -100.00
2023-08-11 2023-06-30 13F ARCH CAP GROUP ORD G0450A105 48,841 48,841 3,656 0.0958
2023-05-15 2023-03-31 13F ARCH CAP GROUP ORD G0450A105 0 -25,292 -100.00 0 -100.00
2023-02-13 2022-12-31 13F ARCH CAP GROUP ORD G0450A105 25,292 25,292 1,588 0.0450
2022-11-14 2022-09-30 13F ARCH CAP GROUP ORD G0450A105 0 -29,199 -100.00 0 -100.00
2022-08-11 2022-06-30 13F ARCH CAP GROUP ORD G0450A105 29,199 -16,557 -36.19 1,328 -40.07 0.0595
2022-05-13 2022-03-31 13F ARCH CAP GROUP ORD G0450A105 45,756 45,756 2,216 0.1041
2022-02-11 2021-12-31 13F ARCH CAP GROUP ORD G0450A105 0 -21,805 -100.00 0 -100.00
2021-11-12 2021-09-30 13F ARCH CAP GROUP ORD G0450A105 21,805 21,805 833 0.0662
2021-08-12 2021-06-30 13F ARCH CAP GROUP ORD G0450A105 0 -17,670 -100.00 0 -100.00
2021-05-13 2021-03-31 13F ARCH CAP GROUP ORD G0450A105 17,670 -4,078 -18.75 678 -13.52 0.0622
2021-02-11 2020-12-31 13F ARCH CAP GROUP ORD G0450A105 21,748 -17,767 -44.96 784 -32.18 0.0830
2020-11-06 2020-09-30 13F ARCH CAP GROUP ORD G0450A105 39,515 -103,112 -72.29 1,156 -71.71 0.0744
2020-08-07 2020-06-30 13F ARCH CAP GROUP ORD G0450A105 142,627 65,903 85.90 4,086 87.09 0.2837
2020-05-08 2020-03-31 13F ARCH CAP GROUP ORD G0450A105 76,724 76,724 2,184 0.1585
2020-02-14 2019-09-30 13F/A-1 ARCH CAP GROUP ORD G0450A105 0 -43,566 -100.00 0 -100.00
2019-08-09 2019-06-30 13F ARCH CAP GROUP ORD G0450A105 43,566 -21,580 -33.13 1,615 -23.31 0.1453
2019-05-13 2019-03-31 13F ARCH CAP GROUP ORD G0450A105 65,146 35,034 116.35 2,106 161.61 0.1496
2019-02-13 2018-12-31 13F ARCH CAP GROUP ORD G0450A105 30,112 -19,123 -38.84 805 -45.16 0.0503
2018-11-09 2018-09-30 13F ARCH CAP GROUP ORD G0450A105 49,235 49,235 1,468 0.1104
2018-08-07 2018-06-30 13F ARCH CAP GROUP ORD G0450A105 0 -17,921 -100.00 0 -100.00
2018-05-03 2018-03-31 13F ARCH CAP GROUP ORD G0450A105 17,921 17,921 1,534 0.1069
2017-11-09 2017-09-30 13F ARCH CAP GROUP ORD G0450A105 0 -5,400 -100.00 0 -100.00
2017-08-01 2017-06-30 13F ARCH CAP GROUP ORD G0450A105 5,400 5,400 504 0.1380
2017-05-08 2017-03-31 13F ARCH CAP GROUP ORD G0450A105 0 -8,100 -100.00 0 -100.00
2017-02-10 2016-12-31 13F ARCH CAP GROUP ORD G0450A105 8,100 1,700 26.56 699 37.87 0.1106
2016-11-10 2016-09-30 13F ARCH CAP GROUP ORD G0450A105 6,400 -800 -11.11 507 -2.12 0.1132
2016-08-10 2016-06-30 13F ARCH CAP GROUP ORD G0450A105 7,200 7,200 0.00 518 0.0681
2016-05-11 2016-03-31 13F ARCH CAP GROUP ORD G0450A105 0 -9,600 -100.00 0 -100.00
2016-02-10 2015-12-31 13F ARCH CAP GROUP ORD G0450A105 9,600 9,600 0.00 670 0.0590
2015-05-13 2015-03-31 13F ARCH CAP GROUP ORD G0450A105 0 -8,400 -100.00 0 -100.00
2015-02-13 2014-12-31 13F ARCH CAP GROUP ORD G0450A105 8,400 8,400 496 0.0877
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.