W. R. Berkley Corporation
MX ˙ BMV ˙ US0844231029
SecurityMX:WRB / W. R. Berkley Corporation
InstitutionStephens Inc /ar/
Latest Disclosed Ownership169,325 shares
Latest Disclosed Value $ 11,222,828
Stephens Inc /ar/ reports 38.21% decrease in ownership of WRB / W. R. Berkley Corporation

On April 28, 2026 - Stephens Inc /ar/ filed a 13F-HR form disclosing ownership of 169,325 shares of W. R. Berkley Corporation (MX:WRB) valued at $11,222,828 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 274,015 shares of W. R. Berkley Corporation. This represents a change in shares of -38.21% 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)
2026-04-28 2026-03-31 13F BERKLEY W R COM 084423102 169,325 -104,690 -38.21 11,223 -41.59 0.1404
2026-02-05 2025-12-31 13F BERKLEY W R COM 084423102 274,015 5,017 1.87 19,214 -6.78 0.2390
2025-10-27 2025-09-30 13F BERKLEY W R COM 084423102 268,998 -1,526 -0.56 20,611 3.63 0.2627
2025-07-29 2025-06-30 13F BERKLEY W R COM 084423102 270,524 1,829 0.68 19,890 4.02 0.2733
2025-05-01 2025-03-31 13F BERKLEY W R COM 084423102 268,695 -11,675 -4.16 19,120 16.54 0.2802
2025-01-28 2024-12-31 13F BERKLEY W R COM 084423102 280,370 -1,296 -0.46 16,407 2.68 0.2300
2024-10-28 2024-09-30 13F BERKLEY W R COM 084423102 281,666 93,816 49.94 15,979 8.24 0.2267
2024-08-06 2024-06-30 13F BERKLEY W R COM 084423102 187,850 -62 -0.03 14,761 -11.17 0.2252
2024-05-15 2024-03-31 13F BERKLEY W R COM 084423102 187,912 2,308 1.24 16,619 26.61 0.2577
2024-02-13 2023-12-31 13F BERKLEY W R COM 084423102 185,604 2,245 1.22 13,126 12.75 0.2264
2023-11-14 2023-09-30 13F BERKLEY W R COM 084423102 183,359 -18,012 -8.94 11,641 -2.94 0.2232
2023-08-14 2023-06-30 13F BERKLEY W R COM 084423102 201,371 86,596 75.45 11,994 67.85 0.2158
2023-05-15 2023-03-31 13F BERKLEY W R COM 084423102 114,775 101,949 794.86 7,146 668.28 0.1371
2023-02-14 2022-12-31 13F/A-1 BERKLEY W R COM 084423102 12,826 200 1.58 931 14.11 0.0191
2023-01-25 2022-12-31 13F BERKLEY W R OM 084423102 12,826 200 1 0.0191
2022-11-02 2022-09-30 13F BERKLEY W R OM 084423102 12,626 413 3.38 815 -2.28 0.0174
2022-08-03 2022-06-30 13F BERKLEY W R OM 084423102 12,213 -26 -0.21 834 2.33 0.0168
2022-05-04 2022-03-31 13F BERKLEY W R OM 084423102 12,239 3,258 36.28 815 10.14 0.0133
2022-03-07 2021-12-31 13F BERKLEY W R OM 084423102 8,981 286 3.29 740 16.35 0.0112
2021-10-27 2021-09-30 13F BERKLEY W R COM 084423102 8,695 304 3.62 636 1.76 0.0098
2021-08-12 2021-06-30 13F BERKLEY W R COM 084423102 8,391 221 2.71 625 1.46 0.0094
2021-05-14 2021-03-31 13F BERKLEY W R COM 084423102 8,170 566 7.44 616 21.98 0.0101
2021-02-10 2020-12-31 13F BERKLEY W R COM 084423102 7,604 0 0.00 505 8.60 0.0091
2020-11-13 2020-09-30 13F BERKLEY W R COM 084423102 7,604 0 0.00 465 6.65 0.0092
2020-08-24 2020-06-30 13F BERKLEY W R COM 084423102 7,604 720 10.46 436 21.45 0.0094
2020-05-14 2020-03-31 13F BERKLEY W R COM 084423102 6,884 1,390 25.30 359 -5.53 0.0096
2020-02-14 2019-12-31 13F BERKLEY W R COM 084423102 5,494 -412 -6.98 380 -11.01 0.0080
2019-10-18 2019-09-30 13F BERKLEY W R COM 084423102 5,906 -937 -13.69 427 -5.32 0.0094
2019-08-01 2019-06-30 13F BERKLEY W R COM 084423102 6,843 2,279 49.93 451 16.54 0.0102
2019-05-03 2019-03-31 13F BERKLEY W R COM 084423102 4,564 -934 -16.99 387 -4.68 0.0092
2019-02-11 2018-12-31 13F W R BERKLEY COM 084423102 5,498 4 0.07 406 -7.52 0.0115
2018-11-14 2018-09-30 13F W R BERKLEY COM 084423102 5,494 0 0.00 439 10.30 0.0109
2018-08-10 2018-06-30 13F W R BERKLEY COM 084423102 5,494 -1,474 -21.15 398 -21.50 0.0120
2018-05-03 2018-03-31 13F W R BERKLEY COM 084423102 6,968 -1,036 -12.94 507 -11.52 0.0189
2018-02-05 2017-12-31 13F BERKLEY W R COM 084423102 8,004 -790 -8.98 573 -2.39 0.0214
2017-11-08 2017-09-30 13F BERKLEY W R COM 084423102 8,794 340 4.02 587 0.34 0.0212
2017-08-10 2017-06-30 13F BERKLEY W R COM 084423102 8,454 2,429 40.32 585 37.32 0.0201
2017-05-11 2017-03-31 13F BERKLEY W R COM 084423102 6,025 -603 -9.10 426 -3.40 0.0155
2017-02-09 2016-12-31 13F BERKLEY W R COM 084423102 6,628 0 0.00 441 15.14 0.0180
2016-11-30 2016-09-30 13F/A-2 BERKLEY W R COM 084423102 6,628 14 0.21 383 -3.28 0.0168
2016-11-10 2016-09-30 13F BERKLEY W R COM 084423102 6,628 383
2016-08-05 2016-06-30 13F BERKLEY W R COM 084423102 6,614 2,041 44.63 396 54.09 0.0177
2016-05-05 2016-03-31 13F BERKLEY W R COM 084423102 4,573 4,573 257 0.0126
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.