WR伯克利公司
MX ˙ BMV ˙ US0844231029
SecurityMX:WRB / W. R. Berkley Corporation
InstitutionMacquarie Group Ltd
Latest Disclosed Ownership27,173 shares
Latest Disclosed Value $ 1,801,026
Macquarie Group Ltd reports 30.04% decrease in ownership of WRB / W. R. Berkley Corporation

On May 15, 2026 - Macquarie Group Ltd filed a 13F-HR form disclosing ownership of 27,173 shares of W. R. Berkley Corporation (MX:WRB) valued at $1,801,026 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 38,840 shares of W. R. Berkley Corporation. This represents a change in shares of -30.04% during the quarter.

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 BERKLEY W R COM 084423102 27,173 -11,667 -30.04 1,801 -33.86 0.0084
2026-02-13 2025-12-31 13F BERKLEY W R COM 084423102 38,840 4,417 12.83 2,723 3.26 0.0119
2025-11-13 2025-09-30 13F BERKLEY W R COM 084423102 34,423 -4,006 -10.42 2,637 -6.59 0.0031
2025-08-14 2025-06-30 13F BERKLEY W R COM 084423102 38,429 -139,345 -78.38 2,823 -77.68 0.0035
2025-08-14 2025-03-31 13F/A-1 BERKLEY W R COM 084423102 177,774 136,928 335.23 12,651 641.07 0.0157
2025-05-15 2025-03-31 13F BERKLEY W R COM 084423102 177,774 136,928 11,443 0.0093
2025-02-14 2024-12-31 13F BERKLEY W R COM 084423102 40,846 12,891 46.11 1,707 7.70 0.0021
2024-11-14 2024-09-30 13F BERKLEY W R COM 084423102 27,955 3,931 16.36 1,586 -14.74 0.0017
2024-08-09 2024-06-30 13F BERKLEY W R COM 084423102 24,024 -124,694 -83.85 1,859 -85.66 0.0021
2024-05-14 2024-03-31 13F BERKLEY W R COM 084423102 148,718 2,277 1.55 12,964 25.17 0.0147
2024-02-14 2023-12-31 13F BERKLEY W R COM 084423102 146,441 115,904 379.55 10,356 434.37 0.0120
2023-11-14 2023-09-30 13F BERKLEY W R COM 084423102 30,537 1,210 4.13 1,939 11.00 0.0024
2023-10-27 2023-06-30 13F/A-2 BERKLEY W R COM 084423102 29,327 0 0.00 1,747 2.11 0.0020
2023-10-12 2023-06-30 13F/A-1 BERKLEY W R COM 084423102 29,327 0 1,747 0.0018
2023-08-14 2023-06-30 13F BERKLEY W R COM 084423102 29,327 0 1,747 0.0018
2023-06-01 2023-03-31 13F/A-1 BERKLEY W R COM 084423102 29,327 9,815 50.30 1,711 20.85 0.0020
2023-05-15 2023-03-31 13F BERKLEY W R COM 084423102 29,327 9,815 1,711 0.0016
2023-02-21 2022-12-31 13F BERKLEY W R COM 084423102 19,512 -2,622 -11.85 1,416 -1.05 0.0017
2022-11-14 2022-09-30 13F BERKLEY W R COM 084423102 22,134 -157,136 -87.65 1,430 -88.31 0.0018
2022-08-17 2022-06-30 13F/A-1 BERKLEY W R COM 084423102 179,270 -61,634 -25.58 12,237 -23.72 0.0137
2022-08-15 2022-06-30 13F BERKLEY W R COM 084423102 179,270 -61,634 12,237 0.0044
2022-05-16 2022-03-31 13F BERKLEY W R COM 084423102 240,904 224,768 1,392.96 16,042 1,107.07 0.0122
2022-02-11 2021-12-31 13F BERKLEY W R COM 084423102 16,136 -3,682 -18.58 1,329 -8.34 0.0011
2021-11-12 2021-09-30 13F BERKLEY W R COM 084423102 19,818 0 0.00 1,450 -1.63 0.0012
2021-08-13 2021-06-30 13F BERKLEY W R COM 084423102 19,818 14,322 260.59 1,474 256.04 0.0012
2021-05-14 2021-03-31 13F BERKLEY W R COM 084423102 5,496 0 0.00 414 13.42 0.0006
2021-02-16 2020-12-31 13F BERKLEY W R COM 084423102 5,496 -2,613 -32.22 365 -26.41 0.0005
2020-11-13 2020-09-30 13F BERKLEY W R COM 084423102 8,109 -220 -2.64 496 3.98 0.0008
2020-08-11 2020-06-30 13F BERKLEY W R COM 084423102 8,329 3,999 92.36 477 111.06 0.0008
2020-05-15 2020-03-31 13F BERKLEY W R COM 084423102 4,330 0 0.00 226 -24.41 0.0005
2020-03-18 2019-12-31 13F/A-2 BERKLEY W R COM 084423102 4,330 3,630 518.57 299 486.27 0.0004
2020-02-28 2019-12-31 13F/A-1 BERKLEY W R COM 084423102 4,330 0 299 0.0004
2020-02-14 2019-12-31 13F BERKLEY W R COM 084423102 4,330 3,630 299 375.2197
2019-11-14 2019-09-30 13F BERKLEY W R COM 084423102 700 0 0.00 51 10.87 0.0001
2019-11-06 2019-06-30 13F/A-2 BERKLEY W R COM 084423102 700 -2,700 -79.41 46 -84.03 0.0001
2019-09-24 2019-06-30 13F/A-1 BERKLEY W R COM 084423102 700 0 46 0.0001
2019-08-14 2019-06-30 13F BERKLEY W R COM 084423102 700 -2,700 46
2019-05-15 2019-03-31 13F BERKLEY W R COM 084423102 3,400 0 0.00 288 14.74 0.0005
2019-02-15 2018-12-31 13F W R BERKLEY COM 084423102 3,400 3,400 251 0.0005
2019-03-21 2018-06-30 13F/A-1 W R BERKLEY COM 084423102 0 -115,400 -100.00 0 -100.00
2018-05-11 2018-03-31 13F W R BERKLEY COM 084423102 115,400 200 0.17 8,390 1.65 0.0153
2018-02-14 2017-12-31 13F BERKLEY W R COM 084423102 115,200 0 0.00 8,254 7.36 0.0146
2017-11-08 2017-09-30 13F BERKLEY W R COM 084423102 115,200 -31,750 -21.61 7,688 -24.37 0.0138
2017-08-14 2017-06-30 13F BERKLEY W R COM 084423102 146,950 -7,900 -5.10 10,165 -7.06 0.0186
2017-05-15 2017-03-31 13F Berkley W R COM 084423102 154,850 -6,200 -3.85 10,937 2.11 0.0199
2017-03-30 2016-12-31 13F/A-1 WR Berkley COMMON 084423102 161,050 450 0.28 10,711 15.46 0.0205
2017-02-15 2016-12-31 13F WR Berkley COMMON 084423102 161,050 10,711
2016-11-15 2016-09-30 13F WR Berkley Common Stock 084423102 160,600 200 0.12 9,277 -3.48 0.0178
2016-09-14 2016-06-30 13F/A-1 WR Berkley Common Stock 084423102 160,400 -39,000 -19.56 9,611 -14.23 0.0189
2016-08-15 2016-06-30 13F WR Berkley Common Stock 084423102 160,400 9,611
2016-05-16 2016-03-31 13F WR Berkley Common Stock 084423102 199,400 -500 -0.25 11,206 2.38 0.0226
2016-02-16 2015-12-31 13F WR Berkley Common Stock 084423102 199,900 500 0.25 10,945 0.95 0.0225
2015-11-16 2015-09-30 13F WR Berkley Common Stock 084423102 199,400 150 0.08 10,842 4.78 0.0232
2015-08-21 2015-06-30 13F/A-1 WR Berkley Common Stock 084423102 199,250 0 0.00 10,347 2.81 0.0205
2015-08-14 2015-06-30 13F WR Berkley Common Stock 084423102 199,250 10,347
2015-05-18 2015-03-31 13F WR Berkley Common Stock 084423102 199,250 100 0.05 10,064 -1.41 0.0198
2015-02-17 2014-12-31 13F WR Berkley Common Stock 084423102 199,150 0 0.00 10,208 7.23 0.0211
2014-11-14 2014-09-30 13F WR Berkley Common Stock 084423102 199,150 100 0.05 9,520 3.28 0.0204
2014-08-14 2014-06-30 13F WR BERKLEY COMMON 084423102 199,050 -8,106 -3.91 9,218 6.92 0.0206
2014-05-15 2014-03-31 13F WR Berkley Common Stock 084423102 207,156 0 0.00 8,621 -4.08 0.0149
2014-02-14 2013-12-31 13F WR Berkley Common Stock 084423102 207,156 1,200 0.58 8,988 1.82 0.0161
2013-11-14 2013-09-30 13F WR BERKLEY Common Stock 084423102 205,956 -235,660 -53.36 8,827 -51.08 0.0173
2013-08-16 2013-06-30 13F/A-1 WR BERKLEY COMMON 084423102 441,616 441,616 18,045 0.0394
2013-08-14 2013-06-30 13F WR BERKLEY COMMON 084423102 441,616 18,045 0.0394
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.