W. R. Berkley Corporation
MX ˙ BMV ˙ US0844231029
SecurityMX:WRB / W. R. Berkley Corporation
InstitutionXponance, Inc.
Latest Disclosed Ownership48,868 shares
Latest Disclosed Value $ 3,238,971
Xponance, Inc. reports 3.73% decrease in ownership of WRB / W. R. Berkley Corporation

On May 13, 2026 - Xponance, Inc. filed a 13F-HR form disclosing ownership of 48,868 shares of W. R. Berkley Corporation (MX:WRB) valued at $3,238,971 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 50,764 shares of W. R. Berkley Corporation. This represents a change in shares of -3.73% 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)
2026-05-13 2026-03-31 13F BERKLEY W R COM 084423102 48,868 -1,896 -3.73 3,239 -9.02 0.0230
2026-02-12 2025-12-31 13F BERKLEY W R COM 084423102 50,764 2,057 4.22 3,560 -4.61 0.0267
2025-11-12 2025-09-30 13F BERKLEY W R COM 084423102 48,707 3,135 6.88 3,732 11.44 0.0295
2025-08-14 2025-06-30 13F BERKLEY W R COM 084423102 45,572 2,543 5.91 3,348 9.38 0.0280
2025-05-01 2025-03-31 13F BERKLEY W R COM 084423102 43,029 885 2.10 3,062 24.13 0.0296
2025-02-11 2024-12-31 13F BERKLEY W R COM 084423102 42,144 717 1.73 2,466 4.94 0.0225
2024-11-12 2024-09-30 13F BERKLEY W R COM 084423102 41,427 13,787 49.88 2,350 8.25 0.0227
2024-08-14 2024-06-30 13F BERKLEY W R COM 084423102 27,640 -78 -0.28 2,172 -11.42 0.0222
2024-05-13 2024-03-31 13F BERKLEY W R COM 084423102 27,718 1,646 6.31 2,451 32.99 0.0257
2024-01-31 2023-12-31 13F BERKLEY W R COM 084423102 26,072 -1,505 -5.46 1,844 5.31 0.0221
2023-10-24 2023-09-30 13F BERKLEY W R COM 084423102 27,577 560 2.07 1,751 8.76 0.0238
2023-07-14 2023-06-30 13F BERKLEY W R COM 084423102 27,017 371 1.39 1,609 -2.96 0.0214
2023-04-18 2023-03-31 13F BERKLEY W R COM 084423102 26,646 1,152 4.52 1,659 -10.38 0.0242
2023-01-24 2022-12-31 13F BERKLEY W R COM 084423102 25,494 3,266 14.69 1,850 28.92 0.0300
2022-10-24 2022-09-30 13F BERKLEY W R COM 084423102 22,228 3,036 15.82 1,435 9.54 0.0276
2022-08-02 2022-06-30 13F BERKLEY W R COM 084423102 19,192 5,650 41.72 1,310 45.23 0.0263
2022-04-20 2022-03-31 13F BERKLEY W R COM 084423102 13,542 4,641 52.14 902 23.06 0.0150
2022-01-31 2021-12-31 13F BERKLEY W R COM 084423102 8,901 1,692 23.47 733 38.83 0.0115
2021-11-05 2021-09-30 13F BERKLEY W R COM 084423102 7,209 -670 -8.50 528 -9.90 0.0100
2021-08-12 2021-06-30 13F BERKLEY W R COM 084423102 7,879 1,952 32.93 586 31.10 0.0108
2021-05-10 2021-03-31 13F BERKLEY W R COM 084423102 5,927 -202 -3.30 447 9.83 0.0095
2021-02-11 2020-12-31 13F BERKLEY W R COM 084423102 6,129 472 8.34 407 17.63 0.0089
2020-10-26 2020-09-30 13F BERKLEY W R COM 084423102 5,657 -101 -1.75 346 4.85 0.0085
2020-08-14 2020-06-30 13F BERKLEY W R COM 084423102 5,758 5,758 330 0.0085
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.