BlackRock, Inc. ownership in WRB / W. R. Berkley Corporation

W. R. Berkley Corporation

MX ˙ BMV ˙ US0844231029

Security	MX:WRB / W. R. Berkley Corporation
Institution	BlackRock, Inc.
Latest Disclosed Ownership	16,362,167 shares
Ownership	6.30%

2024-01-29 - BlackRock, Inc. has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 16,362,167 shares of W. R. Berkley Corporation (MX:WRB). This represents 6.3 percent ownership of the company. In their previous filing dated 2023-02-01 , BlackRock, Inc. had reported owning 14,366,687 shares, indicating an increase of 13.89 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File Date	Effective Date	Form	Prev Shares	Latest Shares	ΔShares (Percent)	Ownership (Percent)	ΔOwnership (Percent)
2024-01-29	2024-01-29	13G/A	14,366,687	16,362,167	13.89	6.30	16.67
2023-02-01	2023-02-01	13G/A	9,574,474	14,366,687	50.05	5.40	0.00
2022-02-01	2022-02-01	13G/A	9,542,523	9,574,474	0.33	5.40	0.00
2021-02-01	2021-02-01	13G/A	15,871,158	9,542,523	-39.88	5.40	-37.21
2020-02-06	2020-02-06	13G/A	19,067,342	15,871,158	-16.76	8.60	-17.31
2019-07-10	2019-07-10	13G/A	11,734,433	19,067,342	62.49	10.40	8.33
2019-02-06	2019-02-06	13G/A	10,372,065	11,734,433	13.13	9.60	12.94
2018-01-29	2018-01-29	13G/A	10,068,277	10,372,065	3.02	8.50	2.41
2017-01-27	2017-01-27	13G/A	10,068,277	10,068,277	0.00	8.30	0.00
2017-01-26	2017-01-26	13G/A		10,068,277		8.30
2016-01-27	2016-01-27	13G/A		8,841,215		7.20
2015-01-29	2015-01-29	13G/A		8,468,462		6.70
2014-01-31	2014-01-31	13G/A		8,426,414		6.20
2013-02-11	2013-02-11	13G/A		7,264,370		5.35
2012-02-09	2012-02-09	13G		7,478,907		5.45

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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 (%)
2026-05-13	2026-03-31	13F	BERKLEY W R	COM	084423102	23,280,608	-1,779,881	-7.10	1,543,039	-12.19	0.0270
2026-02-12	2025-12-31	13F	BERKLEY W R	COM	084423102	25,060,489	285,719	1.15	1,757,241	-7.43	0.0297
2025-11-12	2025-09-30	13F	BERKLEY W R	COM	084423102	24,774,770	-460,264	-1.82	1,898,243	2.39	0.0332
2025-08-12	2025-06-30	13F	BERKLEY W R	COM	084423102	25,235,034	1,075,468	4.45	1,854,018	7.84	0.0353
2025-05-02	2025-03-31	13F	BERKLEY W R	COM	084423102	24,159,566	-201,400	-0.83	1,719,195	20.59	0.0361
2025-02-07	2024-12-31	13F	BERKLEY W R	COM	084423102	24,360,966	1,004,382	4.30	1,425,604	7.59	0.0288
2024-11-13	2024-09-30	13F	BERKLEY W R	COM	084423102	23,356,584	7,535,876	47.63	1,325,019	6.58	0.0278
2024-08-13	2024-06-30	13F	BERKLEY W R	COM	084423102	15,820,708	141,485	0.90	1,243,191	-10.35	0.0281
2024-05-10	2024-03-31	13F	BERKLEY W R	COM	084423102	15,679,223	-683,202	-4.18	1,386,670	19.83	0.0323
2024-02-13	2023-12-31	13F	BERKLEY W R	COM	084423102	16,362,425	2,758,561	20.28	1,157,151	33.97	0.0295
2023-11-13	2023-09-30	13F	BERKLEY W R	COM	084423102	13,603,864	-212,113	-1.54	863,709	4.96	0.0248
2023-08-11	2023-06-30	13F	BERKLEY W R	COM	084423102	13,815,977	-549,999	-3.83	822,880	-8.00	0.0227
2023-05-12	2023-03-31	13F	BERKLEY W R	COM	084423102	14,365,976	-1,005	-0.01	894,426	-14.21	0.0264
2023-02-13	2022-12-31	13F	BERKLEY W R	COM	084423102	14,366,981	547,109	3.96	1,042,612	16.82	0.0327
2022-11-14	2022-09-30	13F	BERKLEY W R	COM	084423102	13,819,872	-374,965	-2.64	892,487	-7.89	0.0304
2022-08-12	2022-06-30	13F	BERKLEY W R	COM	084423102	14,194,837	-462,826	-3.16	968,942	-0.73	0.0311
2022-05-12	2022-03-31	13F	BERKLEY W R	COM	084423102	14,657,663	5,083,189	53.09	976,053	23.73	0.0263
2022-02-10	2021-12-31	13F	BERKLEY W R	COM	084423102	9,574,474	-147,385	-1.52	788,841	10.88	0.0201
2021-11-09	2021-09-30	13F	BERKLEY W R	COM	084423102	9,721,859	-209,545	-2.11	711,445	-3.75	0.0199
2021-08-11	2021-06-30	13F	BERKLEY W R	COM	084423102	9,931,404	291,659	3.03	739,193	1.77	0.0206
2021-05-07	2021-03-31	13F	BERKLEY W R	COM	084423102	9,639,745	97,222	1.02	726,355	14.60	0.0213
2021-02-05	2020-12-31	13F	BERKLEY W R	COM	084423102	9,542,523	-5,178,268	-35.18	633,813	-29.59	0.0202
2020-11-06	2020-09-30	13F	BERKLEY W R	COM	084423102	14,720,791	-404,127	-2.67	900,178	3.89	0.0332
2020-08-14	2020-06-30	13F	BERKLEY W R	COM	084423102	15,124,918	-473,534	-3.04	866,506	6.48	0.0346
2020-05-01	2020-03-31	13F	BERKLEY W R	COM	084423102	15,598,452	-272,706	-1.72	813,772	-25.80	0.0398
2020-02-13	2019-12-31	13F	BERKLEY W R	COM	084423102	15,871,158	-4,142,987	-20.70	1,096,697	-24.14	0.0421
2019-11-08	2019-09-30	13F	BERKLEY W R	COM	084423102	20,014,145	946,803	4.97	1,445,620	15.00	0.0607
2019-08-22	2019-06-30	13F/A-1	BERKLEY W R	COM	084423102	19,067,342	7,221,477	60.96	1,257,109	25.26	0.0538
2019-08-13	2019-06-30	13F	BERKLEY W R	COM	084423102	19,067,342	7,221,477		1,257,109
2019-05-09	2019-03-31	13F	BERKLEY W R	COM	084423102	11,845,865	111,432	0.95	1,003,583	15.71	0.0448
2019-02-08	2018-12-31	13F	W R BERKLEY	COM	084423102	11,734,433	1,018,035	9.50	867,293	1.25	0.0438
2018-11-09	2018-09-30	13F	W R BERKLEY	COM	084423102	10,716,398	236,781	2.26	856,561	12.88	0.0371
2018-08-09	2018-06-30	13F	W R BERKLEY	COM	084423102	10,479,617	-50,483	-0.48	758,830	-0.88	0.0350
2018-05-09	2018-03-31	13F	W R BERKLEY	COM	084423102	10,530,100	158,035	1.52	765,536	3.01	0.0366
2018-02-09	2017-12-31	13F	BERKLEY W R	COM	084423102	10,372,065	-24	-0.00	743,158	7.36	0.0354
2017-11-14	2017-09-30	13F	BERKLEY W R	COM	084423102	10,372,089	54,316	0.53	692,235	-3.00	0.0349
2017-08-10	2017-06-30	13F	BERKLEY W R	COM	084423102	10,317,773	-216,576	-2.06	713,681	-4.08	0.0378
2017-05-12	2017-03-31	13F	BERKLEY W R	COM	084423102	10,534,349	10,336,836	5,233.50	744,042	5,563.71	0.0408
2017-02-10	2016-12-31	13F	BERKLEY W R	COM	084423102	197,513	10,108	5.39	13,137	21.37	0.0186
2016-11-08	2016-09-30	13F	BERKLEY W R	COM	084423102	187,405	8,974	5.03	10,824	1.23	0.0155
2016-08-10	2016-06-30	13F	BERKLEY W R	COM	084423102	178,431	38,334	27.36	10,692	35.81	0.0161
2016-05-10	2016-03-31	13F	BERKLEY W R	COM	084423102	140,097	13,228	10.43	7,873	13.35	0.0127
2016-02-11	2015-12-31	13F	BERKLEY W R	COM	084423102	126,869	26,384	26.26	6,946	27.15	0.0102
2015-11-13	2015-09-30	13F	BERKLEY W R	COM	084423102	100,485	2,366	2.41	5,463	7.20	0.0086
2015-08-07	2015-06-30	13F	BERKLEY W R	COM	084423102	98,119	-25,484	-20.62	5,096	-18.37	0.0076
2015-05-13	2015-03-31	13F	BERKLEY W R	COM	084423102	123,603	56,937	85.41	6,243	82.65	0.0086
2015-02-09	2014-12-31	13F	BERKLEY W R	COM	084423102	66,666	4,919	7.97	3,418	15.83	0.0049
2014-10-29	2014-09-30	13F	BERKLEY W R	COM	084423102	61,747	-78,325	-55.92	2,951	-54.50	0.0043
2014-08-06	2014-06-30	13F	BERKLEY W R	COM	084423102	140,072	-2,507	-1.76	6,486	9.30	0.0096
2014-05-02	2014-03-31	13F	BERKLEY W R	COM	084423102	142,579	-15,629	-9.88	5,934	-13.56	0.0096
2014-02-12	2013-12-31	13F	BERKLEY W R	COM	084423102	158,208	-9,845	-5.86	6,865	-4.69	0.0112
2013-11-12	2013-09-30	13F	BERKLEY W R	COM	084423102	168,053	-21,550	-11.37	7,203	-7.02	0.0136
2013-08-13	2013-06-30	13F	BERKLEY W R	COM	084423102	189,603	189,603		7,747		0.0154

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.