Signaturefd, Llc reports 5.25% increase in ownership of WRB / W. R. Berkley Corporation

W. R. Berkley Corporation

MX ˙ BMV ˙ US0844231029

Security	MX:WRB / W. R. Berkley Corporation
Institution	Signaturefd, Llc
Latest Disclosed Ownership	5,634 shares
Latest Disclosed Value	$ 373,424

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 5,634 shares of W. R. Berkley Corporation (MX:WRB) valued at $373,424 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 5,353 shares of W. R. Berkley Corporation. This represents a change in shares of 5.25% 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-04-07	2026-03-31	13F	BERKLEY W R	COM	084423102	5,634	281	5.25	373	-0.53	0.0057
2026-01-20	2025-12-31	13F	BERKLEY W R	COM	084423102	5,353	280	5.52	375	-3.35	0.0057
2025-10-21	2025-09-30	13F	BERKLEY W R	COM	084423102	5,073	-97	-1.88	389	2.37	0.0061
2025-07-16	2025-06-30	13F	BERKLEY W R	COM	084423102	5,170	-30	-0.58	380	2.43	0.0065
2025-05-02	2025-03-31	13F	BERKLEY W R	COM	084423102	5,200	656	14.44	370	39.62	0.0070
2025-02-10	2024-12-31	13F	BERKLEY W R	COM	084423102	4,544	58	1.29	266	4.33	0.0050
2024-10-21	2024-09-30	13F	BERKLEY W R	COM	084423102	4,486	1,509	50.69	254	9.01	0.0048
2024-07-29	2024-06-30	13F	BERKLEY W R	COM	084423102	2,977	-71	-2.33	234	-13.38	0.0048
2024-05-03	2024-03-31	13F	BERKLEY W R	COM	084423102	3,048	-463	-13.19	270	8.47	0.0057
2024-02-01	2023-12-31	13F	BERKLEY W R	COM	084423102	3,511	175	5.25	248	17.54	0.0057
2023-11-03	2023-09-30	13F	BERKLEY W R	COM	084423102	3,336	1,010	43.42	212	52.90	0.0055
2023-08-01	2023-06-30	13F	BERKLEY W R	COM	084423102	2,326	294	14.47	139	9.52	0.0035
2023-04-28	2023-03-31	13F	BERKLEY W R	COM	084423102	2,032	1,540	313.01	127	260.00	0.0035
2023-01-30	2022-12-31	13F	BERKLEY W R	COM	084423102	492	56	12.84	36	25.00	0.0010
2022-11-08	2022-09-30	13F	BERKLEY W R	COM	084423102	436	-85	-16.31	28	-22.22	0.0010
2022-08-10	2022-06-30	13F	BERKLEY W R	COM	084423102	521	88	20.32	36	24.14	0.0012
2022-05-02	2022-03-31	13F	BERKLEY W R	COM	084423102	433	148	51.93	29	26.09	0.0009
2022-01-25	2021-12-31	13F	BERKLEY W R	COM	084423102	285	39	15.85	23	27.78	0.0007
2021-10-28	2021-09-30	13F	BERKLEY W R	COM	084423102	246	-19	-7.17	18	-10.00	0.0006
2021-07-26	2021-06-30	13F	BERKLEY W R	COM	084423102	265	-7	-2.57	20	0.00	0.0008
2021-04-30	2021-03-31	13F	BERKLEY W R	COM	084423102	272	7	2.64	20	11.11	0.0009
2021-02-11	2020-12-31	13F	BERKLEY W R	COM	084423102	265	-172	-39.36	18	-33.33	0.0008
2020-11-03	2020-09-30	13F	BERKLEY W R	COM	084423102	437	0	0.00	27	8.00	0.0014
2020-07-30	2020-06-30	13F	BERKLEY W R	COM	084423102	437	-329	-42.95	25	-37.50	0.0015
2020-04-23	2020-03-31	13F	BERKLEY W R	COM	084423102	766	-68	-8.15	40	-31.03	0.0035
2020-02-05	2019-12-31	13F	BERKLEY W R	COM	084423102	834	89	11.95	58	7.41	0.0043
2019-10-16	2019-09-30	13F	BERKLEY W R	COM	084423102	745	172	30.02	54	42.11	0.0044
2019-07-31	2019-06-30	13F	BERKLEY W R	COM	084423102	573	275	92.28	38	52.00	0.0033
2019-05-09	2019-03-31	13F	BERKLEY W R	COM	084423102	298	46	18.25	25	31.58	0.0021
2019-02-13	2018-12-31	13F	W R BERKLEY	COM	084423102	252	46	22.33	19	18.75	0.0018
2018-11-14	2018-09-30	13F	W R BERKLEY	COM	084423102	206	-5	-2.37	16	6.67	0.0016
2018-08-14	2018-06-30	13F	W R BERKLEY	COM	084423102	211	87	70.16	15	66.67	0.0017
2018-05-08	2018-03-31	13F	W R BERKLEY	COM	084423102	124	124		9		0.0011
2017-02-14	2016-12-31	13F	BERKLEY W R	COM	084423102	0	-113	-100.00	0	-100.00
2016-11-14	2016-09-30	13F	BERKLEY W R	COM	084423102	113	113		7		0.0010

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.