W. R. Berkley Corporation
MX ˙ BMV ˙ US0844231029
SecurityMX:WRB / W. R. Berkley Corporation
InstitutionPacer Advisors, Inc.
Latest Disclosed Ownership26,987 shares
Latest Disclosed Value $ 1,788,698
Pacer Advisors, Inc. reports 24.03% decrease in ownership of WRB / W. R. Berkley Corporation

On May 6, 2026 - Pacer Advisors, Inc. filed a 13F-HR form disclosing ownership of 26,987 shares of W. R. Berkley Corporation (MX:WRB) valued at $1,788,698 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 24, 2026 disclosing 35,525 shares of W. R. Berkley Corporation. This represents a change in shares of -24.03% 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)
2026-05-06 2026-03-31 13F W R Berkley Common Stock - Domestic 084423102 26,987 -8,538 -24.03 1,789 -28.22 0.0028
2026-02-24 2025-12-31 13F/A-1 W R Berkley Common Stock - Domestic 084423102 35,525 11,400 47.25 2,491 34.79 0.0064
2026-02-04 2025-12-31 13F W R Berkley Common Stock - Domestic 084423102 35,525 11,400 2,491 0.0034
2025-10-15 2025-09-30 13F W R Berkley Common Stock - Domestic 084423102 24,125 -253 -1.04 1,848 3.18 0.0047
2025-08-12 2025-06-30 13F W R Berkley Common Stock - Domestic 084423102 24,378 9,059 59.14 1,791 64.31 0.0045
2025-05-06 2025-03-31 13F W R Berkley Common Stock - Domestic 084423102 15,319 -8,756 -36.37 1,090 -22.59 0.0026
2025-01-22 2024-12-31 13F W R Berkley Common Stock - Domestic 084423102 24,075 1,255 5.50 1,409 8.81 0.0030
2024-11-12 2024-09-30 13F W R Berkley Common Stock - Domestic 084423102 22,820 8,234 56.45 1,295 12.91 0.0027
2024-08-13 2024-06-30 13F W R Berkley Common Stock - Domestic 084423102 14,586 627 4.49 1,146 -7.13 0.0026
2024-05-10 2024-03-31 13F W R Berkley Common Stock - Domestic 084423102 13,959 333 2.44 1,235 28.14 0.0028
2024-01-16 2023-12-31 13F BERKLEY W R Common Stock - Domestic 084423102 13,626 709 5.49 964 17.44 0.0027
2023-11-13 2023-09-30 13F BERKLEY W R Common Stock - Domestic 084423102 12,917 324 2.57 820 9.33 0.0031
2023-07-12 2023-06-30 13F BERKLEY W R Common Stock - Domestic 084423102 12,593 -129 -1.01 750 -5.30 0.0030
2023-05-02 2023-03-31 13F BERKLEY W R Common Stock - Domestic 084423102 12,722 -122,315 -90.58 792 -91.92 0.0034
2023-02-06 2022-12-31 13F BERKLEY W R Common Stock - Domestic 084423102 135,037 134,620 32,282.97 9,800 36,192.59 0.0501
2022-10-18 2022-09-30 13F BERKLEY W R Common Stock - Domestic 084423102 417 -110,162 -99.62 27 -99.64 0.0002
2022-08-12 2022-06-30 13F BERKLEY W R Common Stock - Domestic 084423102 110,579 99,823 928.07 7,548 954.19 0.0561
2022-04-05 2022-03-31 13F BERKLEY W R Common Stock - Domestic 084423102 10,756 3,546 49.18 716 20.54 0.0059
2022-02-03 2021-12-31 13F BERKLEY W R Common Stock - Domestic 084423102 7,210 -1,467 -16.91 594 -6.46 0.0061
2021-10-15 2021-09-30 13F BERKLEY W R Common Stock - Domestic 084423102 8,677 411 4.97 635 3.25 0.0080
2021-07-21 2021-06-30 13F BERKLEY W R Common Stock - Domestic 084423102 8,266 59 0.72 615 -0.49 0.0088
2021-04-05 2021-03-31 13F BERKLEY W R Common Stock 084423102 8,207 -1,029 -11.14 618 0.82 0.0107
2021-01-20 2020-12-31 13F BERKLEY W R Common Stock 084423102 9,236 -1,030 -10.03 613 -2.39 0.0115
2020-10-19 2020-09-30 13F BERKLEY W R Common Stock 084423102 10,266 -2,002 -16.32 628 -10.67 0.0134
2020-07-29 2020-06-30 13F BERKLEY W R Common Stock 084423102 12,268 12,268 703 0.0142
2020-04-23 2020-03-31 13F BERKLEY W R Common Stock 084423102 0 -16,605 -100.00 0 -100.00
2020-02-10 2019-12-31 13F BERKLEY W R Common Stock 084423102 16,605 -36,769 -68.89 1,147 -70.25 0.0518
2019-10-10 2019-09-30 13F BERKLEY W R Common Stock 084423102 53,374 -4,148 -7.21 3,855 1.66 0.0867
2019-08-12 2019-06-30 13F BERKLEY W R Common Stock 084423102 57,522 57,522 3,792 0.0927
2019-02-13 2018-12-31 13F W R BERKLEY Common Stock 084423102 0 -34,832 -100.00 0 -100.00
2018-11-14 2018-09-30 13F W R BERKLEY Common Stock 084423102 34,832 4,430 14.57 2,784 26.49 0.1048
2018-08-14 2018-06-30 13F W R BERKLEY Common Stock 084423102 30,402 3,832 14.42 2,201 13.92 0.0996
2018-05-14 2018-03-31 13F W. R. Berkley COM 084423102 26,570 3,428 14.81 1,932 16.53 0.1069
2018-02-14 2017-12-31 13F W. R. Berkley Com 084423102 23,142 7,632 49.21 1,658 60.19 0.1163
2017-11-08 2017-09-30 13F W. R. Berkley Com 084423102 15,510 2,039 15.14 1,035 11.05 0.0917
2017-08-08 2017-06-30 13F BERKLEY W R Com 084423102 13,471 1,387 11.48 932 9.26 0.0922
2017-05-09 2017-03-31 13F BERKLEY W R Com 084423102 12,084 1,940 19.12 853 26.37 0.1046
2017-02-08 2016-12-31 13F BERKLEY W R Com 084423102 10,144 252 2.55 675 18.21 0.0962
2016-11-10 2016-09-30 13F BERKLEY W R Com 084423102 9,892 852 9.42 571 5.35 0.0868
2016-08-12 2016-06-30 13F BERKLEY W R Com 084423102 9,040 7,523 495.91 542 537.65 0.0856
2016-05-13 2016-03-31 13F BERKLEY W R Com 084423102 1,517 128 9.22 85 11.84 0.0193
2016-02-17 2015-12-31 13F BERKLEY W R Com 084423102 1,389 1,389 76 0.0179
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.