Morgan Stanley ownership in WRB / W. R. Berkley Corporation

W. R. Berkley Corporation

US ˙ NYSE ˙ US0844231029

Security	WRB / W. R. Berkley Corporation
Institution	Morgan Stanley
Latest Disclosed Ownership	10,335,111 shares
Ownership	3.90%

2022-12-12 - Morgan Stanley has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 10,335,111 shares of W. R. Berkley Corporation (US:WRB). This represents 3.9 percent ownership of the company. In their previous filing dated 2022-02-10 , Morgan Stanley had reported owning 9,317,556 shares, indicating an increase of 10.92 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)
2022-12-12	2022-12-12	13G/A	9,317,556	10,335,111	10.92	3.90	-26.42
2022-02-10	2022-02-10	13G/A	9,630,829	9,317,556	-3.25	5.30	-3.64
2021-12-10	2021-12-10	13G/A		9,630,829		5.50

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 (%)
2026-05-15	2026-03-31	13F	BERKLEY W R	COM	084423102	10,412,465	614,107	6.27	690,138	0.45	0.0416
2026-05-27	2025-12-31	13F/A-1	BERKLEY W R	COM	084423102	9,798,358	-2,006,209	-17.00	687,061	-24.04	0.0410
2026-02-13	2025-12-31	13F	BERKLEY W R	COM	084423102	9,798,358	-2,006,209		687,061		0.0410
2026-05-27	2025-09-30	13F/A-1	BERKLEY W R	COM	084423102	11,804,567	-1,431,548	-10.82	904,466	-6.99	0.0548
2025-11-14	2025-09-30	13F	BERKLEY W R	COM	084423102	11,804,567	-1,431,548		904,466		0.0548
2025-08-15	2025-06-30	13F	BERKLEY W R	COM	084423102	13,236,115	-2,556,206	-16.19	972,458	-13.47	0.0633
2025-05-15	2025-03-31	13F	BERKLEY W R	COM	084423102	15,792,321	-2,572,922	-14.01	1,123,782	4.56	0.0804
2025-05-15	2024-12-31	13F/A-1	BERKLEY W R	COM	084423102	18,365,243	-1,663,796	-8.31	1,074,734	-5.41	0.0753
2025-02-14	2024-12-31	13F	BERKLEY W R	COM	084423102	18,365,243	-1,663,796		1,074,734		0.0753
2025-05-14	2024-09-30	13F/A-2	BERKLEY W R	COM	084423102	20,029,039	6,709,662	50.38	1,136,248	8.56	0.0824
2025-02-14	2024-09-30	13F/A-1	BERKLEY W R	COM	084423102	20,029,039	6,709,662		1,136,248		0.0824
2024-11-14	2024-09-30	13F	BERKLEY W R	COM	084423102	20,029,039	6,709,662		1,136,248		0.0824
2025-05-14	2024-06-30	13F/A-2	BERKLEY W R	COM	084423102	13,319,377	692,094	5.48	1,046,637	-6.28	0.0810
2024-10-17	2024-06-30	13F/A-1	BERKLEY W R	COM	084423102	13,319,377	692,094		1,046,637		0.0810
2024-08-14	2024-06-30	13F	BERKLEY W R	COM	084423102	13,319,377	692,094		1,046,637		0.0810
2024-10-17	2024-03-31	13F/A-2	BERKLEY W R	COM	084423102	12,627,283	45,763	0.36	1,116,757	25.51	0.0896
2024-08-16	2024-03-31	13F/A-1	BERKLEY W R	COM	084423102	12,627,283	45,763		1,116,757		0.0896
2024-05-15	2024-03-31	13F	BERKLEY W R	COM	084423102	12,627,283	45,763		1,116,757		0.0896
2024-08-16	2023-12-31	13F/A-1	BERKLEY W R	COM	084423102	12,581,520	-483,704	-3.70	889,765	7.26	0.0784
2024-02-13	2023-12-31	13F	BERKLEY W R	COM	084423102	12,581,520	-483,704		889,765		0.0784
2023-11-15	2023-09-30	13F	BERKLEY W R	COM	084423102	13,065,224	529,817	4.23	829,511	11.10	0.0844
2023-08-14	2023-06-30	13F	BERKLEY W R	COM	084423102	12,535,407	710,409	6.01	746,609	1.41	0.0736
2023-05-15	2023-03-31	13F	BERKLEY W R	COM	084423102	11,824,998	925,905	8.50	736,225	-6.92	0.0789
2023-02-14	2022-12-31	13F	BERKLEY W R	COM	084423102	10,899,093	8,831,553	427.15	790,947	492.37	0.0898
2022-11-14	2022-09-30	13F	BERKLEY W R	COM	084423102	2,067,540	375,028	22.16	133,522	15.57	0.0182
2022-10-27	2022-06-30	13F/A-1	BERKLEY W R	COM	084423102	1,692,512	1,175,801	227.55	115,531	235.79	0.0150
2022-08-15	2022-06-30	13F	BERKLEY W R	COM	084423102	1,692,512	1,175,801		115,531		0.0030
2022-10-27	2022-03-31	13F/A-1	BERKLEY W R	COM	084423102	516,711	146,465	39.56	34,406	12.79	0.0046
2022-05-13	2022-03-31	13F	BERKLEY W R	COM	084423102	516,711	146,465		34,406		0.0046
2022-02-14	2021-12-31	13F	BERKLEY W R	COM	084423102	370,246	-5,382	-1.43	30,505	10.98	0.0038
2021-11-15	2021-09-30	13F	BERKLEY W R	COM	084423102	375,628	-81,471	-17.82	27,487	-19.21	0.0037
2021-08-23	2021-06-30	13F/A-1	BERKLEY W R	COM	084423102	457,099	157,904	52.78	34,022	50.92	0.0045
2021-08-16	2021-06-30	13F	BERKLEY W R	COM	084423102	457,099	157,904		34,022		0.0009
2021-05-17	2021-03-31	13F	BERKLEY W R	COM	084423102	299,195	-180,598	-37.64	22,543	-29.26	0.0033
2021-02-16	2020-12-31	13F	BERKLEY W R	COM	084423102	479,793	306,837	177.41	31,868	201.30	0.0049
2020-11-13	2020-09-30	13F	BERKLEY W R	COM	084423102	172,956	23,370	15.62	10,577	23.40	0.0020
2020-08-14	2020-06-30	13F	BERKLEY W R	COM	084423102	149,586	-72,828	-32.74	8,571	-26.12	0.0019
2020-05-26	2020-03-31	13F/A-1	BERKLEY W R	COM	084423102	222,414	23,065	11.57	11,602	-15.77	0.0032
2020-05-15	2020-03-31	13F	BERKLEY W R	COM	084423102	222,414	23,065		11,602		891.2755
2020-02-14	2019-12-31	13F	BERKLEY W R	COM	084423102	199,349	14,839	8.04	13,775	3.36	0.0032
2019-11-14	2019-09-30	13F	BERKLEY W R	COM	084423102	184,510	69,408	60.30	13,327	75.63	0.0035
2019-08-14	2019-06-30	13F	BERKLEY W R	COM	084423102	115,102	36,353	46.16	7,588	13.73	0.0020
2019-05-15	2019-03-31	13F	BERKLEY W R	COM	084423102	78,749	-28,720	-26.72	6,672	-16.01	0.0019
2019-02-14	2018-12-31	13F	W R BERKLEY	COM	084423102	107,469	-42,811	-28.49	7,944	-33.86	0.0024
2019-04-23	2018-09-30	13F/A-2	W R BERKLEY	COM	084423102	150,280	-43,134	-22.30	12,011	-14.24	0.0030
2018-11-20	2018-09-30	13F/A-1	W R BERKLEY	COM	084423102	150,280	0		12,011		0.0030
2018-11-14	2018-09-30	13F	W R BERKLEY	COM	084423102	150,280	-43,134		12,011
2019-04-23	2018-06-30	13F/A-1	W R BERKLEY	COM	084423102	193,414	-56,820	-22.71	14,005	-23.02	0.0038
2018-08-14	2018-06-30	13F	W R BERKLEY	COM	084423102	193,414	-56,820		14,005
2019-04-23	2018-03-31	13F/A-1	W R BERKLEY	COM	084423102	250,234	20,006	8.69	18,192	10.28	0.0050
2018-05-14	2018-03-31	13F	W R BERKLEY	COM	084423102	250,234	20,006		18,192
2019-04-23	2017-12-31	13F/A-1	BERKLEY W R	COM	084423102	230,228	-66,924	-22.52	16,496	-16.82	0.0045
2018-02-14	2017-12-31	13F	BERKLEY W R	COM	084423102	230,228	-66,924		16,496
2017-11-14	2017-09-30	13F	BERKLEY W R	COM	084423102	297,152	55,113	22.77	19,832	18.46	0.0059
2017-08-11	2017-06-30	13F	BERKLEY W R	COM	084423102	242,039	-37,410	-13.39	16,742	-15.17	0.0051
2017-05-22	2017-03-31	13F/A-1	BERKLEY W R	COM	084423102	279,449	54,345	24.14	19,737	31.83	0.0061
2017-05-12	2017-03-31	13F	BERKLEY W R	COM	084423102	279,449			19,737
2017-02-22	2016-12-31	13F/A-1	BERKLEY W R	COM	084423102	225,104	68,551	43.79	14,972	65.56	0.0049
2017-02-13	2016-12-31	13F	BERKLEY W R	COM	084423102	225,104			14,972
2016-11-10	2016-09-30	13F	BERKLEY W R	COM	084423102	156,553	18,622	13.50	9,043	9.41	0.0031
2016-08-12	2016-06-30	13F	BERKLEY W R	COM	084423102	137,931	89,013	181.96	8,265	200.76	0.0030
2016-05-12	2016-03-31	13F	BERKLEY W R	COM	084423102	48,918	-105,862	-68.40	2,748	-67.57	0.0011
2016-02-09	2015-12-31	13F	BERKLEY W R	COM	084423102	154,780	86,428	126.45	8,474	128.04	0.0031
2016-02-08	2015-09-30	13F/A-1	BERKLEY W R	COM	084423102	68,352	-96,584	-58.56	3,716	-56.62	0.0014
2015-11-09	2015-09-30	13F	BERKLEY W R	COM	084423102	68,352			3,716
2015-08-12	2015-06-30	13F	BERKLEY W R	COM	084423102	164,936	68,656	71.31	8,566	76.11	0.0030
2015-05-14	2015-03-31	13F	BERKLEY W R	COM	084423102	96,280	-293,174	-75.28	4,864	-75.64	0.0018
2015-02-13	2014-12-31	13F	BERKLEY W R	COM	084423102	389,454	232,030	147.39	19,964	165.27	0.0073
2014-12-16	2014-09-30	13F/A-1	BERKLEY W R	COM	084423102	157,424	13,825	9.63	7,526	13.17	0.0029
2014-11-14	2014-09-30	13F	BERKLEY W R	COM	084423102	157,424			7,526
2014-08-12	2014-06-30	13F	BERKLEY W R	COM	084423102	143,599	-8,057	-5.31	6,650	5.35	0.0114
2014-05-13	2014-03-31	13F	BERKLEY W R	COM	084423102	151,656	-93,231	-38.07	6,312	-40.59	0.0026
2014-02-13	2013-12-31	13F	BERKLEY W R	COM	084423102	244,887	83,463	51.70	10,624	53.53	0.0045
2013-11-13	2013-09-30	13F	WR BERKLEY CORP COM ST	COM	084423102	161,424	-282,961	-63.67	6,920	-61.89	0.0033
2013-08-08	2013-06-30	13F	WR BERKLEY CORP COM ST	COM	084423102	444,385	444,385		18,158		0.0092

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.