CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

Pension

Position in WRB — Berkley W R Corp

CIK 1081019 WEST SACRAMENTO, CA

Back to WRB Full portfolio

Position in WRB

as of Mar 31, 2026 · filed May 18, 2026 Compact

Position Value

$20,521,282

-$6,371,841 QoQ

Shares Held

309,615

-19.3% QoQ

Ownership

0.083%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in WRB Over Time

Shares Held

Position Value (USD)

Position in Insurance - Property & Casualty

Financial Services · as of Mar 31, 2026

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM holds $803,468,313 across 43 Insurance - Property & Casualty names. WRB ranks #8 (2.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CB	Chubb Ltd	570,544	$185,957,405
2	PGR	Progressive Corp/Oh/	862,577	$170,997,264
3	TRV	Travelers Companies, Inc.	343,341	$100,145,702
4	ALL	Allstate Corp	389,068	$80,669,359
5	L	Loews Corp	729,574	$77,874,728
6	MKL	Markel Group Inc.	18,099	$34,642,751
7	CINF	Cincinnati Financial Corp	206,601	$32,508,667
8	WRB	Berkley W R Corp This page	309,615	$20,521,282

All Filings in WRB

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$20,521,282	309,615	-19.3%	Shares	Sole	2026-05-18
2025-12-31	$26,893,123	383,530	+2.3%	Shares	Sole	2026-02-17
2025-09-30	$28,714,034	374,759	-6.2%	Shares	Sole	2025-11-14
2025-06-30	$29,352,440	399,516	-6.2%	Shares	Sole	2025-08-14
2025-03-31	$30,323,055	426,125	+3.2%	Shares	Sole	2025-05-15
2024-12-31	$24,169,520	413,013	-4.1%	Shares	Sole	2025-03-18
2024-09-30	$24,426,973	430,583	+44.8%	Shares	Sole	2025-04-04
2024-06-30	$15,579,804	297,400	-5.4%	Shares	Sole	2025-04-08
2024-03-31	$18,528,415	314,254	-0.3%	Shares	Sole	2024-05-16
2023-12-31	$14,854,605	315,072	-1.7%	Shares	Sole	2024-02-13
2023-09-30	$13,563,548	320,449	-7.1%	Shares	Sole	2023-11-14
2023-06-30	$13,702,782	345,100	-0.9%	Shares	Sole	2023-08-21
2023-03-31	$14,452,134	348,188	-0.9%	Shares	Sole	2023-05-09
2022-12-31	$16,999,861	351,382	+0.9%	Shares	Sole	2023-02-14
2022-09-30	$14,993,570	348,256	-1.1%	Shares	Sole	2022-11-21
2022-06-30	$16,020,497	352,047	+2.7%	Shares	Sole	2022-08-15
2022-03-31	$15,220,331	342,852	+40.5%	Shares	Sole	2022-05-16
2021-12-31	$8,932,985	243,952	+1.0%	Shares	Sole	2022-02-15
2021-09-30	$7,855,325	241,521	-0.0%	Shares	Sole	2021-11-15
2021-06-30	$7,990,904	241,563	-3.6%	Shares	Sole	2021-08-16
2021-03-31	$8,395,231	250,687	+1.1%	Shares	Sole	2021-05-18
2020-12-31	$7,322,524	248,053	-0.2%	Shares	Sole	2021-02-16
2020-09-30	$6,752,134	248,443	+2.0%	Shares	Sole	2020-11-17
2020-06-30	$6,203,559	243,638	-0.6%	Shares	Sole	2020-08-17
2020-03-31	$5,684,057	245,143	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.