Arch Capital Group Ltd.
US ˙ NasdaqGS ˙ BMG0450A1053

SecurityACGL / Arch Capital Group Ltd.
InstitutionAmalgamated Bank
Latest Disclosed Ownership67,573 shares
Latest Disclosed Value $ 6,486
Amalgamated Bank reports 0.07% decrease in ownership of ACGL / Arch Capital Group Ltd.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 67,573 shares of Arch Capital Group Ltd. (US:ACGL) valued at $6,486,332 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 67,622 shares of Arch Capital Group Ltd.. This represents a change in shares of -0.07% during the quarter. The current value of the position is $5,938,991 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)
2026-05-08 2026-03-31 13F ARCH CAPITAL GROUP COM G0450A105 67,573 -49 -0.07 6 0.00 0.0496
2026-02-05 2025-12-31 13F ARCH CAPITAL GROUP COM G0450A105 67,622 -3,411 -4.80 6 0.00 0.0468
2025-10-29 2025-09-30 13F ARCH CAPITAL GROUP COM G0450A105 71,033 -1,410 -1.95 6 0.00 0.0460
2025-08-04 2025-06-30 13F ARCH CAPITAL GROUP COM G0450A105 72,443 -6,303 -8.00 7 -14.29 0.0509
2025-04-25 2025-03-31 13F ARCH CAPITAL GROUP COM G0450A105 78,746 -309 -0.39 8 0.00 0.0648
2025-02-04 2024-12-31 13F ARCH CAPITAL GROUP COM G0450A105 79,055 -2,689 -3.29 7 -22.22 0.0599
2024-10-30 2024-09-30 13F ARCH CAPITAL GROUP COM G0450A105 81,744 6,948 9.29 9 28.57 0.0753
2024-08-12 2024-06-30 13F ARCH CAPITAL GROUP COM G0450A105 74,796 -2,650 -3.42 8 0.00 0.0643
2024-04-23 2024-03-31 13F ARCH CAPITAL GROUP COM G0450A105 77,446 -26,840 -25.74 7 0.00 0.0612
2024-02-06 2023-12-31 13F ARCH CAPITAL GROUP COM G0450A105 104,286 -9,744 -8.55 8 -22.22 0.0618
2023-11-08 2023-09-30 13F ARCH CAPITAL GROUP COM G0450A105 114,030 17,395 18.00 9 28.57 0.0774
2023-08-11 2023-06-30 13F ARCH CAPITAL GROUP COM G0450A105 96,635 -3,475 -3.47 7 16.67 0.0585
2023-05-02 2023-03-31 13F ARCH CAPITAL GROUP COM G0450A105 100,110 -21,229 -17.50 7 -14.29 0.0579
2023-02-10 2022-12-31 13F ARCH CAPITAL GROUP COM G0450A105 121,339 82,070 208.99 8 -99.61 0.0679
2022-11-09 2022-09-30 13F ARCH CAPITAL GROUP COM G0450A105 39,269 -23,632 -37.57 1,788 -37.50 0.0173
2022-08-15 2022-06-30 13F ARCH CAPITAL GROUP COM G0450A105 62,901 25,014 66.02 2,861 56.00 0.0267
2022-08-25 2022-03-31 13F/A-1 ARCH CAPITAL GROUP COM G0450A105 37,887 159 0.42 1,834 9.36 0.0142
2022-06-30 2022-03-31 13F ARCH CAPITAL GROUP COM G0450A105 37,887 159 1,834 0.0146
2022-02-15 2021-12-31 13F/A-1 ARCH CAPITAL GROUP COM G0450A105 37,728 -4,990 -11.68 1,677 2.82 0.0124
2022-02-15 2021-12-31 13F ARCH CAPITAL GROUP COM G0450A105 37,728 -4,990 1,677 0.0124
2021-10-29 2021-09-30 13F ARCH CAPITAL GROUP COM G0450A105 42,718 -4,419 -9.37 1,631 -11.17 0.0138
2021-08-16 2021-06-30 13F ARCH CAPITAL GROUP COM G0450A105 47,137 30,473 182.87 1,836 187.32 0.0147
2021-05-13 2021-03-31 13F ARCH CAPITAL GROUP COM G0450A105 16,664 -795 -4.55 639 1.43 0.0240
2021-02-12 2020-12-31 13F ARCH CAPITAL GROUP COM G0450A105 17,459 -212 -1.20 630 21.86 0.0239
2020-10-30 2020-09-30 13F ARCH CAPITAL GROUP COM G0450A105 17,671 -52 -0.29 517 1.77 0.0225
2020-08-10 2020-06-30 13F ARCH CAPITAL GROUP COM G0450A105 17,723 -34,366 -65.98 508 -65.72 0.0235
2020-05-13 2020-03-31 13F ARCH CAPITAL GROUP COM G0450A105 52,089 -2,097 -3.87 1,482 -36.23 0.0362
2020-02-13 2019-12-31 13F ARCH CAPITAL GROUP COM G0450A105 54,186 3,488 6.88 2,324 9.21 0.0428
2019-11-13 2019-09-30 13F ARCH CAPITAL GROUP COM G0450A105 50,698 1,368 2.77 2,128 16.35 0.0447
2019-08-14 2019-06-30 13F ARCH CAPITAL GROUP COM G0450A105 49,330 4,027 8.89 1,829 24.93 0.0427
2019-05-15 2019-03-31 13F ARCH CAPITAL GROUP COM G0450A105 45,303 1,671 3.83 1,464 25.56 0.0355
2019-02-15 2018-12-31 13F ARCH CAPITAL GROUP COM G0450A105 43,632 -1,119 -2.50 1,166 -12.59 0.0330
2018-11-14 2018-09-30 13F ARCH CAPITAL GROUP COM G0450A105 44,751 -669 -1.47 1,334 10.98 0.0330
2018-07-18 2018-06-30 13F ARCH CAPITAL GROUP COM G0450A105 45,420 31,748 232.21 1,202 2.74 0.0294
2018-05-22 2018-03-31 13F ARCH CAPITAL GROUP COM G0450A105 13,672 72 0.53 1,170 -5.19 0.0310
2018-02-13 2017-12-31 13F ARCH CAPITAL GROUP COM G0450A105 13,600 902 7.10 1,234 -1.36 0.0334
2017-11-09 2017-09-30 13F ARCH CAPITAL GROUP COM G0450A105 12,698 1,402 12.41 1,251 18.69 0.0390
2017-08-10 2017-06-30 13F ARCH CAPITAL GROUP COM G0450A105 11,296 -5,184 -31.46 1,054 -32.52 0.0345
2017-05-12 2017-03-31 13F ARCH CAPITAL GROUP COM G0450A105 16,480 535 3.36 1,562 13.52 0.0777
2017-02-14 2016-12-31 13F ARCH CAPITAL GROUP COM G0450A105 15,945 2,058 14.82 1,376 24.98 0.0622
2016-11-15 2016-09-30 13F/A-1 ARCH CAPITAL GROUP COM G0450A105 13,887 21 0.15 1,101 5.76 0.0639
2016-08-16 2016-06-30 13F ARCH CAPITAL GROUP COM G0450A105 13,866 -561 -3.89 1,041 1.46 0.0602
2016-05-11 2016-03-31 13F ARCH CAPITAL GROUP COM G0450A105 14,427 1,284 9.77 1,026 11.89 0.1000
2016-02-10 2015-12-31 13F ARCH CAPITAL GROUP COM G0450A105 13,143 -905 -6.44 917 -11.14 0.1131
2015-11-04 2015-09-30 13F ARCH CAPITAL GROUP COM G0450A105 14,048 139 1.00 1,032 10.85 0.1083
2015-07-10 2015-06-30 13F ARCH CAPITAL GROUP COM G0450A105 13,909 10,557 314.95 931 351.94 0.0914
2015-04-22 2015-03-31 13F ARCH CAPITAL GROUP COM G0450A105 3,352 -393 -10.49 206 -4.19 0.0251
2014-05-12 2014-03-31 13F ARCH CAPITAL GROUP LTD COM G0450A105 3,745 -67 -1.76 215 -5.70 0.0370
2014-02-13 2013-12-31 13F ARCH CAPITAL GROUP LTD COM G0450A105 3,812 3,812 228 0.0388
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.