W. R. Berkley Corporation
MX ˙ BMV ˙ US0844231029
SecurityMX:WRB / W. R. Berkley Corporation
InstitutionLido Advisors, LLC
Latest Disclosed Ownership29,044 shares
Latest Disclosed Value $ 1,925,118
Lido Advisors, LLC reports 0.80% increase in ownership of WRB / W. R. Berkley Corporation

On May 13, 2026 - Lido Advisors, LLC filed a 13F-HR form disclosing ownership of 29,044 shares of W. R. Berkley Corporation (MX:WRB) valued at $1,925,118 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 28,813 shares of W. R. Berkley Corporation. This represents a change in shares of 0.80% 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 29,044 231 0.80 1,925 -10.00 0.0059
2026-02-10 2025-12-31 13F BERKLEY W R COM 084423102 28,813 10,020 53.32 2,139 48.54 0.0064
2025-11-14 2025-09-30 13F BERKLEY W R COM 084423102 18,793 1,979 11.77 1,440 16.60 0.0045
2025-08-13 2025-06-30 13F BERKLEY W R COM 084423102 16,814 6,990 71.15 1,235 76.68 0.0048
2025-05-15 2025-03-31 13F BERKLEY W R COM 084423102 9,824 -1,126 -10.28 699 9.22 0.0031
2025-02-14 2024-12-31 13F BERKLEY W R COM 084423102 10,950 1,176 12.03 641 15.52 0.0029
2024-11-14 2024-09-30 13F BERKLEY W R COM 084423102 9,774 3,211 48.93 554 7.57 0.0028
2024-08-15 2024-06-30 13F BERKLEY W R COM 084423102 6,563 -7,511 -53.37 516 -58.60 0.0029
2024-05-15 2024-03-31 13F BERKLEY W R COM 084423102 14,074 -5,553 -28.29 1,245 -10.37 0.0073
2024-02-14 2023-12-31 13F BERKLEY W R COM 084423102 19,627 -4,857 -19.84 1,388 -10.68 0.0094
2023-11-14 2023-09-30 13F BERKLEY W R COM 084423102 24,484 -9,782 -28.55 1,555 -23.82 0.0118
2023-08-09 2023-06-30 13F BERKLEY W R COM 084423102 34,266 -1,854 -5.13 2,041 -9.25 0.0146
2023-05-15 2023-03-31 13F BERKLEY W R COM 084423102 36,120 7,899 27.99 2,249 9.77 0.0219
2023-02-14 2022-12-31 13F BERKLEY W R COM 084423102 28,221 5,506 24.24 2,048 39.70 0.0250
2022-11-14 2022-09-30 13F BERKLEY W R COM 084423102 22,715 13,109 136.47 1,466 123.82 0.0184
2022-08-15 2022-06-30 13F BERKLEY W R COM 084423102 9,606 9,606 655 0.0087
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.