WR伯克利公司
MX ˙ BMV ˙ US0844231029
SecurityMX:WRB / W. R. Berkley Corporation
InstitutionD.a. Davidson & Co.
Latest Disclosed Ownership21,114 shares
Latest Disclosed Value $ 1,399,497
D.a. Davidson & Co. reports 2.15% decrease in ownership of WRB / W. R. Berkley Corporation

On May 5, 2026 - D.a. Davidson & Co. filed a 13F-HR form disclosing ownership of 21,114 shares of W. R. Berkley Corporation (MX:WRB) valued at $1,399,497 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 21,579 shares of W. R. Berkley Corporation. This represents a change in shares of -2.15% 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)
2026-05-05 2026-03-31 13F BERKLEY W R COM 084423102 21,114 -465 -2.15 1,399 -7.53 0.0085
2026-01-29 2025-12-31 13F BERKLEY W R COM 084423102 21,579 -861 -3.84 1,513 -11.98 0.0093
2025-10-22 2025-09-30 13F BERKLEY W R COM 084423102 22,440 -1,025 -4.37 1,719 -0.29 0.0110
2025-07-30 2025-06-30 13F BERKLEY W R COM 084423102 23,465 -19 -0.08 1,724 3.17 0.0121
2025-04-28 2025-03-31 13F BERKLEY W R COM 084423102 23,484 -561 -2.33 1,671 18.76 0.0134
2025-01-31 2024-12-31 13F BERKLEY W R COM 084423102 24,045 13 0.05 1,407 3.23 0.0115
2024-11-13 2024-09-30 13F BERKLEY W R COM 084423102 24,032 7,968 49.60 1,363 8.00 0.0113
2024-08-01 2024-06-30 13F BERKLEY W R COM 084423102 16,064 1,350 9.17 1,262 -3.00 0.0112
2024-05-13 2024-03-31 13F BERKLEY W R COM 084423102 14,714 -224 -1.50 1,301 23.20 0.0117
2024-02-09 2023-12-31 13F BERKLEY W R COM 084423102 14,938 0 0.00 1,056 11.39 0.0104
2023-11-08 2023-09-30 13F BERKLEY W R COM 084423102 14,938 0 0.00 948 6.64 0.0103
2023-08-11 2023-06-30 13F BERKLEY W R COM 084423102 14,938 0 0.00 890 -4.41 0.0094
2023-04-25 2023-03-31 13F BERKLEY W R COM 084423102 14,938 1,975 15.24 930 -1.06 0.0105
2023-02-03 2022-12-31 13F BERKLEY W R COM 084423102 12,963 0 0.00 941 12.31 0.0111
2022-11-07 2022-09-30 13F BERKLEY W R COM 084423102 12,963 0 0.00 837 -5.42 0.0110
2022-07-28 2022-06-30 13F BERKLEY W R COM 084423102 12,963 0 0.00 885 2.55 0.0111
2022-05-12 2022-03-31 13F BERKLEY W R COM 084423102 12,963 4,404 51.45 863 22.41 0.0094
2022-01-31 2021-12-31 13F BERKLEY W R COM 084423102 8,559 0 0.00 705 12.62 0.0075
2021-11-15 2021-09-30 13F BERKLEY W R COM 084423102 8,559 0 0.00 626 -1.73 0.0073
2021-08-10 2021-06-30 13F BERKLEY W R COM 084423102 8,559 0 0.00 637 -1.24 0.0075
2021-05-07 2021-03-31 13F BERKLEY W R COM 084423102 8,559 557 6.96 645 21.24 0.0083
2021-02-10 2020-12-31 13F BERKLEY W R COM 084423102 8,002 92 1.16 532 9.92 0.0081
2020-11-02 2020-09-30 13F BERKLEY W R COM 084423102 7,910 81 1.03 484 7.80 0.0084
2020-08-10 2020-06-30 13F BERKLEY W R COM 084423102 7,829 -258 -3.19 449 6.40 0.0084
2020-05-05 2020-03-31 13F BERKLEY W R COM 084423102 8,087 -200 -2.41 422 -26.35 0.0082
2020-02-14 2019-12-31 13F BERKLEY W R COM 084423102 8,287 -178 -2.10 573 -6.22 0.0093
2019-11-05 2019-09-30 13F BERKLEY W R COM 084423102 8,465 -2,399 -22.08 611 -14.66 0.0109
2019-08-13 2019-06-30 13F BERKLEY W R COM 084423102 10,864 3,621 49.99 716 33.58 0.0133
2019-05-13 2019-03-31 13F BERKLEY W R COM 084423102 7,243 0 0.00 536 0.19 0.0092
2019-01-29 2018-12-31 13F W R BERKLEY COM 084423102 7,243 1 0.01 535 -7.60 0.0104
2018-11-13 2018-09-30 13F W R BERKLEY COM 084423102 7,242 -400 -5.23 579 4.70 0.0103
2018-08-02 2018-06-30 13F W R BERKLEY COM 084423102 7,642 2,293 42.87 553 42.16 0.0108
2018-05-04 2018-03-31 13F W R BERKLEY COM 084423102 5,349 0 0.00 389 1.57 0.0080
2018-02-08 2017-12-31 13F BERKLEY W R COM 084423102 5,349 -793 -12.91 383 -6.36 0.0080
2017-11-08 2017-09-30 13F BERKLEY W R COM 084423102 6,142 306 5.24 409 1.49 0.0080
2017-08-11 2017-06-30 13F BERKLEY WR COM 084423102 5,836 67 1.16 403 -0.98 0.0091
2017-05-12 2017-03-31 13F BERKLEY WR COM 084423102 5,769 0 0.00 407 6.27 0.0099
2017-02-15 2016-12-31 13F BERKLEY WR COM 084423102 5,769 -588 -9.25 383 4.36 0.0087
2016-11-18 2016-09-30 13F/A-1 BERKLEY WR COM 084423102 6,357 6,357 367 0.0091
2016-11-14 2016-09-30 13F BERKLEY WR COM 084423102 6,357 367 0.0091
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.