Arch Capital Group Ltd.
US ˙ NasdaqGS ˙ BMG0450A1053

SecurityACGL / Arch Capital Group Ltd.
InstitutionWetherby Asset Management Inc
Latest Disclosed Ownership31,028 shares
Latest Disclosed Value $ 2,815,171
Wetherby Asset Management Inc reports 0.51% decrease in ownership of ACGL / Arch Capital Group Ltd.

On November 14, 2025 - Wetherby Asset Management Inc filed a 13F-HR form disclosing ownership of 31,028 shares of Arch Capital Group Ltd. (US:ACGL) valued at $2,815,170 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 14, 2025 disclosing 31,188 shares of Arch Capital Group Ltd.. This represents a change in shares of -0.51% during the quarter. The current value of the position is $2,829,443 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)
2025-11-14 2025-09-30 13F ARCH CAP GROUP ORD G0450A105 31,028 -160 -0.51 2,815 -0.85 0.1149
2025-08-14 2025-06-30 13F ARCH CAP GROUP ORD G0450A105 31,188 -1,264 -3.89 2,840 -5.24 0.1264
2025-02-14 2024-12-31 13F ARCH CAP GROUP ORD G0450A105 32,452 -447 -1.36 2,997 -18.59 0.1437
2024-11-14 2024-09-30 13F ARCH CAP GROUP ORD G0450A105 32,899 -256 -0.77 3,681 10.01 0.1683
2024-08-14 2024-06-30 13F ARCH CAP GROUP ORD G0450A105 33,155 18 0.05 3,345 9.21 0.1577
2024-05-15 2024-03-31 13F ARCH CAP GROUP ORD G0450A105 33,137 -22 -0.07 3,063 24.41 0.1460
2024-02-14 2023-12-31 13F ARCH CAP GROUP ORD G0450A105 33,159 -143 -0.43 2,463 -7.23 0.1283
2023-11-14 2023-09-30 13F ARCH CAP GROUP ORD G0450A105 33,302 200 0.60 2,655 7.15 0.1505
2023-08-14 2023-06-30 13F ARCH CAP GROUP ORD G0450A105 33,102 57 0.17 2,478 10.48 0.1334
2023-05-12 2023-03-31 13F ARCH CAP GROUP ORD G0450A105 33,045 170 0.52 2,243 8.68 0.1312
2023-02-14 2022-12-31 13F ARCH CAP GROUP ORD G0450A105 32,875 -5,373 -14.05 2,064 18.43 0.1326
2022-11-14 2022-09-30 13F ARCH CAP GROUP ORD G0450A105 38,248 -278 -0.72 1,742 -0.63 0.1228
2022-08-15 2022-06-30 13F ARCH CAP GROUP ORD G0450A105 38,526 34 0.09 1,753 -5.95 0.1197
2022-05-16 2022-03-31 13F ARCH CAP GROUP ORD G0450A105 38,492 -321 -0.83 1,864 8.06 0.1068
2022-02-14 2021-12-31 13F ARCH CAP GROUP ORD G0450A105 38,813 389 1.01 1,725 17.59 0.0969
2021-11-15 2021-09-30 13F ARCH CAP GROUP ORD G0450A105 38,424 235 0.62 1,467 -1.34 0.0905
2021-08-16 2021-06-30 13F ARCH CAP GROUP ORD G0450A105 38,189 864 2.31 1,487 3.84 0.0907
2021-05-14 2021-03-31 13F ARCH CAP GROUP ORD G0450A105 37,325 -12 -0.03 1,432 6.31 0.1091
2021-02-11 2020-12-31 13F ARCH CAP GROUP ORD G0450A105 37,337 37,312 149,248.00 1,347 134,600.00 0.0913
2020-12-16 2020-09-30 13F/A-01 ARCH CAP GROUP ORD G0450A105 41,031 -232 1,200 0.1100
2020-12-16 2020-09-30 13F/A-02 ARCH CAP GROUP ORD G0450A105 25 -41,238 -99.94 1 -99.92 0.0030
2020-11-13 2020-09-30 13F ARCH CAP GROUP ORD G0450A105 41,056 -207 1,201 76,394.1454
2020-08-14 2020-06-30 13F ARCH CAP GROUP ORD G0450A105 41,263 -470 -1.13 1,182 -0.51 0.1120
2020-05-06 2020-03-31 13F ARCH CAP GROUP ORD G0450A105 41,733 403 0.98 1,188 -32.99 0.1334
2020-01-28 2019-12-31 13F ARCH CAP GROUP ORD G0450A105 41,330 -217 -0.52 1,773 1.66 0.1746
2019-10-31 2019-09-30 13F ARCH CAP GROUP ORD G0450A105 41,547 124 0.30 1,744 13.54 0.1821
2019-07-25 2019-06-30 13F ARCH CAP GROUP ORD G0450A105 41,423 0 0.00 1,536 14.71 0.1681
2019-07-25 2019-03-31 13F/A-1 ARCH CAP GROUP ORD G0450A105 41,423 145 0.35 1,339 21.40 0.1667
2019-05-09 2019-03-31 13F ARCH CAP GROUP ORD G0450A105 41,423 145 1,339
2019-01-30 2018-12-31 13F ARCH CAP GROUP ORD G0450A105 41,278 193 0.47 1,103 -9.96 0.1560
2018-11-07 2018-09-30 13F ARCH CAP GROUP ORD G0450A105 41,085 0 0.00 1,225 12.70 0.1513
2018-07-24 2018-06-30 13F ARCH CAP GROUP ORD G0450A105 41,085 27,546 203.46 1,087 -6.21 0.1472
2018-05-04 2018-03-31 13F ARCH CAP GROUP ORD G0450A105 13,539 10 0.07 1,159 -5.62 0.1600
2018-02-09 2017-12-31 13F ARCH CAP GROUP ORD G0450A105 13,529 35 0.26 1,228 -7.60 0.1704
2017-11-13 2017-09-30 13F ARCH CAP GROUP ORD G0450A105 13,494 0 0.00 1,329 5.56 0.1977
2017-08-01 2017-06-30 13F ARCH CAP GROUP ORD G0450A105 13,494 -18 -0.13 1,259 -1.72 0.2142
2017-04-27 2017-03-31 13F ARCH CAP GROUP ORD G0450A105 13,512 0 0.00 1,281 9.86 0.2304
2017-02-08 2016-12-31 13F ARCH CAP GROUP ORD G0450A105 13,512 -3,500 -20.57 1,166 -13.50 0.2284
2016-11-14 2016-09-30 13F ARCH CAP GROUP ORD G0450A105 17,012 32 0.19 1,348 10.22 0.2727
2016-08-10 2016-06-30 13F ARCH CAP GROUP ORD G0450A105 16,980 -16 -0.09 1,223 1.24 0.2711
2016-05-10 2016-03-31 13F ARCH CAP GROUP ORD G0450A105 16,996 16,996 1,208 0.2847
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.