Asset Management One Co., Ltd. reports 16.55% decrease in ownership of WR1 / W. R. Berkley Corporation

W. R. Berkley Corporation

DE ˙ DB ˙ US0844231029

55,86 € ↑0,16 (0,29%)

2026-06-04
AKTIENPREIS

Security	DE:WR1 / W. R. Berkley Corporation
Institution	Asset Management One Co., Ltd.
Latest Disclosed Ownership	114,342 shares
Latest Disclosed Value	$ 7,578,588

On May 8, 2026 - Asset Management One Co., Ltd. filed a 13F-HR form disclosing ownership of 114,342 shares of W. R. Berkley Corporation (DE:WR1) valued at $6,567,804 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 137,015 shares of W. R. Berkley Corporation. This represents a change in shares of -16.55% during the quarter. The current value of the position is $6,387,144 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-08	2026-03-31	13F	BERKLEY W R	COM	084423102	114,342	-22,673	-16.55	7,579	-21.86	0.0223
2026-01-27	2025-12-31	13F	BERKLEY W R	COM	084423102	137,015	-1,324	-0.96	9,698	-8.50	0.0270
2025-10-22	2025-09-30	13F	BERKLEY W R	COM	084423102	138,339	3,009	2.22	10,600	6.61	0.0307
2025-07-31	2025-06-30	13F	BERKLEY W R	COM	084423102	135,330	-1,623	-1.19	9,943	2.02	0.0312
2025-04-23	2025-03-31	13F	BERKLEY W R	COM	084423102	136,953	6,841	5.26	9,746	27.02	0.0337
2025-01-30	2024-12-31	13F	BERKLEY W R	COM	084423102	130,112	8,403	6.90	7,673	11.12	0.0264
2024-10-30	2024-09-30	13F	BERKLEY W R	COM	084423102	121,709	25,385	26.35	6,905	-8.79	0.0246
2024-07-18	2024-06-30	13F	BERKLEY W R	COM	084423102	96,324	-505	-0.52	7,569	-11.61	0.0290
2024-05-02	2024-03-31	13F	BERKLEY W R	COM	084423102	96,829	-8,582	-8.14	8,564	15.36	0.0330
2024-01-24	2023-12-31	13F	BERKLEY W R	COM	084423102	105,411	13,675	14.91	7,423	27.46	0.0299
2023-10-19	2023-09-30	13F	BERKLEY W R	COM	084423102	91,736	-2,907	-3.07	5,824	3.34	0.0259
2023-07-31	2023-06-30	13F	BERKLEY W R	COM	084423102	94,643	255	0.27	5,637	-4.08	0.0239
2023-04-25	2023-03-31	13F	BERKLEY W R	COM	084423102	94,388	3,848	4.25	5,877	-11.36	0.0266
2023-02-06	2022-12-31	13F	BERKLEY W R	COM	084423102	90,540	1,369	1.54	6,629	15.13	0.0323
2022-11-04	2022-09-30	13F	BERKLEY W R	COM	084423102	89,171	-17,500	-16.41	5,758	-20.92	0.0293
2022-07-29	2022-06-30	13F	BERKLEY W R	COM	084423102	106,671	-202	-0.19	7,281	2.32	0.0342
2022-05-13	2022-03-31	13F	BERKLEY W R	COM	084423102	106,873	26,143	32.38	7,116	6.83	0.0278
2022-02-09	2021-12-31	13F	BERKLEY W R	COM	084423102	80,730	13,975	20.93	6,661	36.36	0.0232
2021-11-02	2021-09-30	13F	BERKLEY W R	COM	084423102	66,755	737	1.12	4,885	-0.57	0.0187
2021-08-03	2021-06-30	13F	BERKLEY W R	COM	084423102	66,018	-5,377	-7.53	4,913	-8.66	0.0183
2021-05-14	2021-03-31	13F	BERKLEY W R	COM	084423102	71,395	-8,156	-10.25	5,379	2.85	0.0214
2021-02-12	2020-12-31	13F	BERKLEY W R	COM	084423102	79,551	-444	-0.56	5,230	6.95	0.0215
2020-11-13	2020-09-30	13F	BERKLEY W R	COM	084423102	79,995	-1,566	-1.92	4,890	4.62	0.0225
2020-08-14	2020-06-30	13F	BERKLEY W R	COM	084423102	81,561	-2,346	-2.80	4,674	6.76	0.0230
2020-05-14	2020-03-31	13F	BERKLEY W R	COM	084423102	83,907	-3,716	-4.24	4,378	-27.70	0.0256
2020-02-14	2019-12-31	13F	BERKLEY W R	COM	084423102	87,623	1,562	1.81	6,055	-2.57	0.0273
2019-11-14	2019-09-30	13F	BERKLEY W R	COM	084423102	86,061	93	0.11	6,215	9.61	0.0299
2019-08-14	2019-06-30	13F	BERKLEY W R	COM	084423102	85,968	35,277	69.59	5,670	32.04	0.0278
2019-05-15	2019-03-31	13F	BERKLEY W R	COM	084423102	50,691	-109,166	-68.29	4,294	-63.61	0.0232
2019-02-13	2018-12-31	13F	W R BERKLEY	COM	084423102	159,857	-25,973	-13.98	11,800	-20.38	0.0281
2018-11-14	2018-09-30	13F	W R BERKLEY	COM	084423102	185,830	28,011	17.75	14,821	29.74	0.0304
2018-08-14	2018-06-30	13F	W R BERKLEY	COM	084423102	157,819	2,693	1.74	11,424	1.30	0.0250
2018-05-14	2018-03-31	13F	W R BERKLEY	COM	084423102	155,126	-3,163	-2.00	11,277	-0.59	0.0254
2018-02-14	2017-12-31	13F	BERKLEY W R	COM	084423102	158,289	-2,029	-1.27	11,344	6.03	0.0250
2017-11-14	2017-09-30	13F	BERKLEY W R	COM	084423102	160,318	-72,483	-31.14	10,699	-33.58	0.0251
2017-08-14	2017-06-30	13F	BERKLEY W R	COM	084423102	232,801	72,244	45.00	16,107	42.01	0.0411
2017-05-11	2017-03-31	13F	BERKLEY W R	COM	084423102	160,557	-4,845	-2.93	11,342	3.09	0.0298
2017-05-02	2016-12-31	13F/A-1	BERKLEY W R	COM	084423102	165,402	155,628	1,592.27	11,002	1,857.65	0.0281
2017-02-13	2016-12-31	13F	BERKLEY W R	COM	084423102	165,402			11,002
2016-11-07	2016-09-30	13F	WR BERKLEY	Com	084423102	9,774	1,530	18.56	562	17.57	0.0083
2016-08-03	2016-06-30	13F	WR BERKLEY	Com	084423102	8,244	0	0.00	478	3.46	0.0072
2016-05-05	2016-03-31	13F	WR BERKLEY	Com	084423102	8,244	0	0.00	462	0.43	0.0067
2016-01-28	2015-12-31	13F	WR BERKLEY	Com	084423102	8,244	-2,503	-23.29	460	-20.55	0.0069
2015-11-12	2015-09-30	13F	WR BERKLEY	Com	084423102	10,747	-1,946	-15.33	579	-11.74	0.0088
2015-08-06	2015-06-30	13F	WR BERKLEY	Com	084423102	12,693	0	0.00	656	1.23	0.0091
2015-05-11	2015-03-31	13F	WR BERKLEY	COM	084423102	12,693	0	0.00	648	-1.22	0.0080
2015-02-09	2014-12-31	13F	WR BERKLEY	COM	084423102	12,693	0	0.00	656	8.07	0.0085
2014-11-05	2014-09-30	13F	WR BERKLEY	COM	084423102	12,693	-50,000	-79.75	607	-79.08	0.0084
2014-08-12	2014-06-30	13F	WR BERKLEY	Com	084423102	62,693	25,400	68.11	2,901	87.89	0.0433
2014-05-05	2014-03-31	13F	WR BERKLEY	Com	084423102	37,293	24,600	193.81	1,544	183.30	0.0243
2014-02-05	2013-12-31	13F/A-1	WR BERKLEY	COM	084423102	12,693	-41,058	-76.39	545	-76.39	0.0084
2014-01-29	2013-12-31	13F	WR BERKLEY	COM	084423102	12,693			545
2014-02-05	2013-09-30	13F/A-1	WR BERKLEY	COM	084423102	53,751	-5,457	-9.22	2,308	-4.43	0.0347
2013-11-06	2013-09-30	13F	WR BERKLEY	Com	084423102	53,751			2,308
2014-02-12	2013-06-30	13F/A-1	WR BERKLEY	COM	084423102	59,208	59,208		2,415		0.0392
2013-08-05	2013-06-30	13F	WR BERKLEY	Com	084423102	59,208			2,415

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.