W. R. Berkley Corporation
MX ˙ BMV ˙ US0844231029
SecurityMX:WRB / W. R. Berkley Corporation
InstitutionVident Advisory, LLC
Latest Disclosed Ownership89,062 shares
Latest Disclosed Value $ 5,903,090
Vident Advisory, LLC reports 29.40% increase in ownership of WRB / W. R. Berkley Corporation

On May 14, 2026 - Vident Advisory, LLC filed a 13F-HR form disclosing ownership of 89,062 shares of W. R. Berkley Corporation (MX:WRB) valued at $5,903,090 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 68,829 shares of W. R. Berkley Corporation. This represents a change in shares of 29.40% 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)
2026-05-14 2026-03-31 13F BERKLEY W R COM 084423102 89,062 20,233 29.40 5,903 22.32 0.0160
2026-02-18 2025-12-31 13F BERKLEY W R COM 084423102 68,829 -11,808 -14.64 4,826 -21.88 0.0439
2025-11-14 2025-09-30 13F BERKLEY W R COM 084423102 80,637 44,444 122.80 6,178 132.34 0.0590
2025-08-14 2025-06-30 13F BERKLEY W R COM 084423102 36,193 -5,359 -12.90 2,659 -10.05 0.0299
2025-05-15 2025-03-31 13F BERKLEY W R COM 084423102 41,552 26,671 179.23 2,957 239.77 0.0432
2025-02-14 2024-12-31 13F BERKLEY W R COM 084423102 14,881 3,046 25.74 871 29.66 0.0153
2024-11-14 2024-09-30 13F BERKLEY W R COM 084423102 11,835 -42,752 -78.32 671 -84.36 0.0169
2024-08-14 2024-06-30 13F BERKLEY W R COM 084423102 54,587 46,547 578.94 4,289 503.23 0.1185
2024-05-14 2024-03-31 13F BERKLEY W R COM 084423102 8,040 -40,321 -83.38 711 -79.21 0.0148
2024-02-14 2023-12-31 13F BERKLEY W R COM 084423102 48,361 1,926 4.15 3,420 16.01 0.0860
2024-02-21 2023-09-30 13F/A-01 BERKLEY W R COM 084423102 46,435 46,435 2,948 0.0913
2023-11-14 2023-09-30 13F BERKLEY W R COM 084423102 46,435 46,435 2,948 0.0735
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.