Arch Capital Group Ltd.
US ˙ NasdaqGS ˙ BMG0450A1053

SecurityACGL / Arch Capital Group Ltd.
InstitutionMacquarie Group Ltd
Latest Disclosed Ownership33,898 shares
Latest Disclosed Value $ 3,253,869
Macquarie Group Ltd reports 35.33% decrease in ownership of ACGL / Arch Capital Group Ltd.

On May 15, 2026 - Macquarie Group Ltd filed a 13F-HR form disclosing ownership of 33,898 shares of Arch Capital Group Ltd. (US:ACGL) valued at $3,253,869 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 52,414 shares of Arch Capital Group Ltd.. This represents a change in shares of -35.33% during the quarter. The current value of the position is $2,979,295 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 33,898 -18,516 -35.33 3,254 -35.29 0.0152
2026-02-13 2025-12-31 13F ARCH CAP GROUP ORD G0450A105 52,414 6,004 12.94 5,028 19.41 0.0220
2025-11-13 2025-09-30 13F ARCH CAP GROUP ORD G0450A105 46,410 -8,305 -15.18 4,211 -15.48 0.0049
2025-08-14 2025-06-30 13F ARCH CAP GROUP ORD G0450A105 54,715 -14,997 -21.51 4,982 -25.70 0.0061
2025-08-14 2025-03-31 13F/A-1 ARCH CAP GROUP ORD G0450A105 69,712 5,986 9.39 6,705 47.50 0.0083
2025-05-15 2025-03-31 13F ARCH CAP GROUP ORD G0450A105 90,829 27,103 4,678 0.0038
2025-02-14 2024-12-31 13F ARCH CAP GROUP ORD G0450A105 63,726 15,350 31.73 4,546 -16.02 0.0055
2024-11-14 2024-09-30 13F ARCH CAP GROUP ORD G0450A105 48,376 -3,137 -6.09 5,412 4.14 0.0058
2024-08-09 2024-06-30 13F ARCH CAP GROUP ORD G0450A105 51,513 -25,702 -33.29 5,197 -26.99 0.0060
2024-05-14 2024-03-31 13F ARCH CAP GROUP ORD G0450A105 77,215 27,888 56.54 7,119 94.32 0.0081
2024-02-14 2023-12-31 13F ARCH CAP GROUP ORD G0450A105 49,327 8,719 21.47 3,664 13.20 0.0042
2023-11-14 2023-09-30 13F ARCH CAP GROUP ORD G0450A105 40,608 -2,972 -6.82 3,237 -0.77 0.0041
2023-10-27 2023-06-30 13F/A-2 ARCH CAP GROUP ORD G0450A105 43,580 -52,476 -54.63 3,262 -49.98 0.0037
2023-10-12 2023-06-30 13F/A-1 ARCH CAP GROUP ORD G0450A105 43,580 -52,476 3,262 0.0033
2023-08-14 2023-06-30 13F ARCH CAP GROUP ORD G0450A105 43,580 -52,476 3,262 0.0033
2023-06-01 2023-03-31 13F/A-1 ARCH CAP GROUP ORD G0450A105 96,056 68,375 247.01 6,520 275.30 0.0077
2023-05-15 2023-03-31 13F ARCH CAP GROUP ORD G0450A105 96,056 68,375 6,520 0.0060
2023-02-21 2022-12-31 13F ARCH CAP GROUP ORD G0450A105 27,681 -10,829 -28.12 1,738 -0.97 0.0021
2022-11-14 2022-09-30 13F ARCH CAP GROUP ORD G0450A105 38,510 5,445 16.47 1,754 16.62 0.0022
2022-08-17 2022-06-30 13F/A-1 ARCH CAP GROUP ORD G0450A105 33,065 -3,419 -9.37 1,504 -14.88 0.0017
2022-08-15 2022-06-30 13F ARCH CAP GROUP ORD G0450A105 33,065 -3,419 1,504 0.0005
2022-05-16 2022-03-31 13F ARCH CAP GROUP ORD G0450A105 36,484 -542,934 -93.70 1,767 -93.14 0.0013
2022-02-11 2021-12-31 13F Arch Capital Grp ORD G0450A105 579,418 -704,987 -54.89 25,755 -47.48 0.0215
2021-11-12 2021-09-30 13F ARCH CAP GROUP ORD G0450A105 1,284,405 -9,184 -0.71 49,038 -2.65 0.0418
2021-08-13 2021-06-30 13F ARCH CAP GROUP ORD G0450A105 1,293,589 1,275,704 7,132.82 50,372 7,242.86 0.0414
2021-05-14 2021-03-31 13F ARCH CAP GROUP ORD G0450A105 17,885 0 0.00 686 6.36 0.0010
2021-02-16 2020-12-31 13F ARCH CAP GROUP ORD G0450A105 17,885 -13,354 -42.75 645 -29.43 0.0009
2020-11-13 2020-09-30 13F ARCH CAP GROUP ORD G0450A105 31,239 10,685 51.99 914 55.18 0.0015
2020-08-11 2020-06-30 13F ARCH CAP GROUP ORD G0450A105 20,554 12,554 156.93 589 158.33 0.0010
2020-05-15 2020-03-31 13F ARCH CAP GROUP ORD G0450A105 8,000 0 0.00 228 -33.53 0.0005
2020-03-18 2019-12-31 13F/A-2 ARCH CAP GROUP ORD G0450A105 8,000 -700 -8.05 343 -6.03 0.0005
2020-02-28 2019-12-31 13F/A-1 ARCH CAP GROUP ORD G0450A105 8,000 0 343 0.0005
2020-02-14 2019-12-31 13F ARCH CAP GROUP ORD G0450A105 8,000 -700 343 430.4359
2019-11-14 2019-09-30 13F ARCH CAP GROUP ORD G0450A105 8,700 0 0.00 365 13.35 0.0006
2019-11-06 2019-06-30 13F/A-2 ARCH CAP GROUP ORD G0450A105 8,700 0 0.00 322 14.59 0.0005
2019-09-24 2019-06-30 13F/A-1 ARCH CAP GROUP ORD G0450A105 8,700 0 322 0.0005
2019-08-14 2019-06-30 13F ARCH CAP GROUP ORD G0450A105 8,700 0 322
2019-05-15 2019-03-31 13F ARCH CAP GROUP ORD G0450A105 8,700 7,800 866.67 281 1,070.83 0.0005
2019-02-15 2018-12-31 13F ARCH CAP GROUP ORD G0450A105 900 -600 -40.00 24 -46.67 0.0000
2018-11-15 2018-09-30 13F ARCH CAP GROUP ORD G0450A105 1,500 0 0.00 45 12.50 0.0001
2019-03-21 2018-06-30 13F/A-1 ARCH CAP GROUP COM G0450A105 1,500 -2,100 -58.33 40 -87.01 0.0001
2018-08-14 2018-06-30 13F ARROW ELECTRS COM G0450A105 1,500 -2,100 40
2018-05-11 2018-03-31 13F ARCH CAP GROUP ORD G0450A105 3,600 0 0.00 308 -33.76 0.0006
2018-02-14 2017-12-31 13F ARCH CAP GROUP ORD G0450A105 3,600 -300 -7.69 465 21.09 0.0008
2017-11-08 2017-09-30 13F ARCH CAP GROUP ORD G0450A105 3,900 0 0.00 384 5.49 0.0007
2017-08-14 2017-06-30 13F ARCH CAP GROUP ORD G0450A105 3,900 3,100 387.50 364 378.95 0.0007
2017-05-15 2017-03-31 13F Arch Capital Group ORD G0450A105 800 -500 -38.46 76 -32.14 0.0001
2017-03-30 2016-12-31 13F/A-1 Arch Capital Group Common Stock G0450A105 1,300 -2,100 -61.76 112 -41.97 0.0002
2017-02-15 2016-12-31 13F Arch Capital Group Common Stock G0450A105 1,300 112
2016-11-15 2016-09-30 13F Arch Capital Group Common Stock G0450A105 3,400 -16,818 -83.18 193 -97.13 0.0004
2016-09-14 2016-06-30 13F/A-1 Arch Capital Group Common Stock G0450A105 20,218 17,818 742.42 6,720 3,829.82 0.0132
2016-08-15 2016-06-30 13F Arch Capital Group Common Stock G0450A105 20,218 6,720
2016-05-16 2016-03-31 13F Arch Capital Group Common Stock G0450A105 2,400 0 0.00 171 2.40 0.0003
2016-02-16 2015-12-31 13F Arch Capital Group Common Stock G0450A105 2,400 0 0.00 167 -5.11 0.0003
2015-11-16 2015-09-30 13F Arch Capital Group Common Stock G0450A105 2,400 0 0.00 176 9.32 0.0004
2015-08-21 2015-06-30 13F/A-1 Arch Capital Group Common Stock G0450A105 2,400 0 0.00 161 8.78 0.0003
2015-08-14 2015-06-30 13F Arch Capital Group Common Stock G0450A105 2,400 161
2015-05-18 2015-03-31 13F Arch Capital Group Common Stock G0450A105 2,400 0 0.00 148 4.23 0.0003
2015-02-17 2014-12-31 13F Arch Capital Group Common Stock G0450A105 2,400 0 0.00 142 8.40 0.0003
2014-11-14 2014-09-30 13F Arch Capital Group Common Stock G0450A105 2,400 0 0.00 131 -5.07 0.0003
2014-08-14 2014-06-30 13F Arch Capital Group Common G0450A105 2,400 -400 -14.29 138 -14.29 0.0003
2014-05-15 2014-03-31 13F Arch Capital Group Common Stock G0450A105 2,800 0 0.00 161 -3.59 0.0003
2014-02-14 2013-12-31 13F Arch Capital Group Common Stock G0450A105 2,800 1,600 133.33 167 156.92 0.0003
2013-11-14 2013-09-30 13F Arch Capital Group Common Stock G0450A105 1,200 0 0.00 65 4.84 0.0001
2013-08-16 2013-06-30 13F/A-1 Arch Capital Group Common Stock G0450A105 1,200 1,200 62 0.0001
2013-08-14 2013-06-30 13F Arch Capital Group Common Stock G0450A105 1,200 62 0.0001
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.