CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

Pension

Position in WTM — White Mountains Insurance Group Ltd

CIK 1081019 WEST SACRAMENTO, CA

Back to WTM Full portfolio

Position in WTM

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

Position Value

$6,342,623

+$1,236,904 QoQ

Shares Held

2,887

+17.5% QoQ

Ownership

0.121%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in WTM 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 $802,423,473 across 43 Insurance - Property & Casualty names. WTM ranks #14 (0.8% 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	309,615	$20,521,282

All Filings in WTM

Export CSV

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$6,342,623	2,887	+17.5%	Shares	Sole	2026-05-18
2025-12-31	$5,105,719	2,457	+1.0%	Shares	Sole	2026-02-17
2025-09-30	$4,066,808	2,433	+2.6%	Shares	Sole	2025-11-14
2025-06-30	$4,259,447	2,372	0.0%	Shares	Sole	2025-08-14
2025-03-31	$4,568,021	2,372	-1.1%	Shares	Sole	2025-05-15
2024-12-31	$4,664,254	2,398	-1.0%	Shares	Sole	2025-03-18
2024-09-30	$4,109,892	2,423	-2.7%	Shares	Sole	2025-04-04
2024-06-30	$4,525,450	2,490	-2.5%	Shares	Sole	2025-04-08
2024-03-31	$4,582,642	2,554	-5.2%	Shares	Sole	2024-05-16
2023-12-31	$4,054,496	2,694	-4.4%	Shares	Sole	2024-02-13
2023-09-30	$4,216,349	2,819	-8.8%	Shares	Sole	2023-11-14
2023-06-30	$4,291,731	3,090	-3.4%	Shares	Sole	2023-08-21
2023-03-31	$4,406,590	3,199	-1.3%	Shares	Sole	2023-05-09
2022-12-31	$4,582,429	3,240	-2.8%	Shares	Sole	2023-02-14
2022-09-30	$4,342,965	3,333	-12.7%	Shares	Sole	2022-11-21
2022-06-30	$4,758,970	3,819	-0.2%	Shares	Sole	2022-08-15
2022-03-31	$4,347,254	3,826	-9.3%	Shares	Sole	2022-05-16
2021-12-31	$4,278,658	4,220	-18.0%	Shares	Sole	2022-02-15
2021-09-30	$5,503,143	5,145	+0.1%	Shares	Sole	2021-11-15
2021-06-30	$5,898,578	5,138	-2.1%	Shares	Sole	2021-08-16
2021-03-31	$5,853,225	5,250	-0.2%	Shares	Sole	2021-05-18
2020-12-31	$5,261,470	5,258	+1.6%	Shares	Sole	2021-02-16
2020-09-30	$4,032,104	5,176	+2.0%	Shares	Sole	2020-11-17
2020-06-30	$4,506,447	5,075	-1.4%	Shares	Sole	2020-08-17
2020-03-31	$4,681,950	5,145	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.