WR 버클리 공사
MX ˙ BMV ˙ US0844231029
SecurityMX:WRB / W. R. Berkley Corporation
InstitutionVestmark Advisory Solutions, Inc.
Latest Disclosed Ownership85,567 shares
Latest Disclosed Value $ 5,671,402
Vestmark Advisory Solutions, Inc. reports 11.44% decrease in ownership of WRB / W. R. Berkley Corporation

On May 15, 2026 - Vestmark Advisory Solutions, Inc. filed a 13F-HR form disclosing ownership of 85,567 shares of W. R. Berkley Corporation (MX:WRB) valued at $5,671,402 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 96,620 shares of W. R. Berkley Corporation. This represents a change in shares of -11.44% 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 85,567 -11,053 -11.44 5,671 -16.28 0.0390
2026-02-06 2025-12-31 13F BERKLEY W R COM 084423102 96,620 -1,839 -1.87 6,775 -10.19 0.0914
2025-11-10 2025-09-30 13F BERKLEY W R COM 084423102 98,459 2,858 2.99 7,544 7.40 0.1438
2025-08-06 2025-06-30 13F BERKLEY W R COM 084423102 95,601 -95,937 -50.09 7,024 -48.47 0.1014
2025-05-13 2025-03-31 13F BERKLEY W R COM 084423102 191,538 96,408 101.34 13,630 144.82 0.3509
2025-02-06 2024-12-31 13F BERKLEY W R COM 084423102 95,130 3,164 3.44 5,567 6.71 0.1917
2024-11-14 2024-09-30 13F BERKLEY W R COM 084423102 91,966 34,680 60.54 5,217 15.91 0.1942
2024-08-12 2024-06-30 13F BERKLEY W R COM 084423102 57,286 2,341 4.26 4,502 -7.37 0.1879
2024-05-15 2024-03-31 13F BERKLEY W R COM 084423102 54,945 4,162 8.20 4,859 35.31 0.2093
2024-02-06 2023-12-31 13F BERKLEY W R COM 084423102 50,783 1,634 3.32 3,591 15.10 0.1825
2023-11-06 2023-09-30 13F BERKLEY W R COM 084423102 49,149 -56,676 -53.56 3,120 -50.49 0.2268
2023-08-07 2023-06-30 13F BERKLEY W R COM 084423102 105,825 3,402 3.32 6,303 -1.16 0.2400
2023-05-09 2023-03-31 13F BERKLEY W R COM 084423102 102,423 -33,004 -24.37 6,377 -35.12 0.2762
2023-01-20 2022-12-31 13F BERKLEY W R COM 084423102 135,427 -3,086 -2.23 9,828 9.87 0.4788
2022-11-03 2022-09-30 13F BERKLEY W R COM 084423102 138,513 4,429 3.30 8,945 -2.27 0.4986
2022-08-04 2022-06-30 13F BERKLEY W R COM 084423102 134,084 13,436 11.14 9,153 13.93 0.5228
2022-04-27 2022-03-31 13F BERKLEY W R COM 084423102 120,648 42,927 55.23 8,034 25.47 0.4548
2022-01-31 2021-12-31 13F BERKLEY W R COM 084423102 77,721 5,538 7.67 6,403 21.20 0.3613
2021-11-15 2021-09-30 13F BERKLEY W R COM 084423102 72,183 6,650 10.15 5,283 8.32 0.3578
2021-08-09 2021-06-30 13F BERKLEY W R COM 084423102 65,533 5,370 8.93 4,877 7.57 0.3470
2021-05-10 2021-03-31 13F BERKLEY W R COM 084423102 60,163 19,786 49.00 4,534 69.05 0.4022
2021-02-04 2020-12-31 13F BERKLEY W R COM 084423102 40,377 1,301 3.33 2,682 12.26 0.3010
2020-10-19 2020-09-30 13F BERKLEY W R COM 084423102 39,076 5,767 17.31 2,389 25.21 0.3209
2020-08-13 2020-06-30 13F BERKLEY W R COM 084423102 33,309 1,754 5.56 1,908 15.92 0.2952
2020-05-06 2020-03-31 13F BERKLEY W R COM 084423102 31,555 1,620 5.41 1,646 -20.41 0.3218
2020-02-14 2019-12-31 13F BERKLEY W R COM 084423102 29,935 1,000 3.46 2,068 -1.05 0.4243
2019-11-05 2019-09-30 13F BERKLEY W R COM 084423102 28,935 1,846 6.81 2,090 17.02 0.3389
2019-08-20 2019-06-30 13F BERKLEY W R COM 084423102 27,089 8,877 48.74 1,786 15.75 0.3056
2019-05-14 2019-03-31 13F BERKLEY W R COM 084423102 18,212 18,212 1,543 0.2751
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.