W. R. Berkley Corporation
US ˙ NYSE ˙ US0844231029

SecurityWRB / W. R. Berkley Corporation
InstitutionNbc Securities, Inc.
Latest Disclosed Ownership741 shares
Latest Disclosed Value $ 49,113
Nbc Securities, Inc. reports 4.14% decrease in ownership of WRB / W. R. Berkley Corporation

On April 14, 2026 - Nbc Securities, Inc. filed a 13F-HR form disclosing ownership of 741 shares of W. R. Berkley Corporation (US:WRB) valued at $49,113 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 773 shares of W. R. Berkley Corporation. This represents a change in shares of -4.14% during the quarter. The current value of the position is $50,810 USD.

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)
2026-04-14 2026-03-31 13F BERKLEY W R COMMON STK 084423102 741 -32 -4.14 49 -9.26 0.0037
2026-01-29 2025-12-31 13F BERKLEYWRCORPORATION COMMONSTK 084423102 773 -3 -0.39 54 -8.47 0.0041
2025-11-14 2025-09-30 13F BERKLEY W R COMMON STK 084423102 776 -344 -30.71 59 0.0046
2025-07-08 2025-06-30 13F BERKLEY W R COMMON STK 084423102 1,120 855 322.64 0 0.0067
2025-04-09 2025-03-31 13F BERKLEY W R CORP COM Stock 084423102 265 265 0 0.0015
2025-01-22 2024-12-31 13F BERKLEY W R CORP COM Stock 084423102 0 -424 -100.00 0 0.0000
2024-10-15 2024-09-30 13F BERKLEY W R CORP COM Stock 084423102 424 140 49.30 0 0.0020
2024-07-10 2024-06-30 13F BERKLEY W R CORP COM Stock 084423102 284 -40 -12.35 0 0.0020
2024-04-05 2024-03-31 13F BERKLEY W R CORP COM Stock 084423102 324 -43 -11.72 0 0.0026
2024-02-07 2023-12-31 13F BERKLEY W R CORP COM Stock 084423102 367 -18 -4.68 0 0.0025
2023-11-03 2023-09-30 13F BERKLEY W R CORP COM Stock 084423102 385 385 0 0.0026
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.