WELLINGTON MANAGEMENT GROUP LLP

Position in WTM — White Mountains Insurance Group Ltd

CIK 902219 Boston, MA

Back to WTM Full portfolio

Position in WTM

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$32,699,550

-$399,311 QoQ

Shares Held

14,884

-6.6% QoQ

Ownership

0.624%

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 0% Shared 74% None 26%

Common Shares in WTM Over Time

Shares Held

Position Value (USD)

Position in Insurance - Property & Casualty

Financial Services · as of Mar 31, 2026

WELLINGTON MANAGEMENT GROUP LLP holds $3,763,769,619 across 15 Insurance - Property & Casualty names. WTM ranks #5 (0.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CB	Chubb Ltd	6,308,944	$2,056,274,114
2	PGR	Progressive Corp/Oh/	6,478,995	$1,284,395,966
3	MKL	Markel Group Inc.	106,673	$204,179,577
4	AIZ	Assurant, Inc.	462,519	$100,741,263
5	WTM	White Mountains Insurance Group Ltd This page	14,884	$32,699,550
6	RLI	Rli Corp	516,726	$29,474,050
7	STC	Stewart Information Services Corp	217,488	$13,392,909
8	KMPR	KEMPER Corp	417,481	$12,758,217

All Filings in WTM

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$32,699,550	14,884	-6.6%	Shares	Defined	2026-05-15
2025-12-31	$33,098,861	15,928	-17.1%	Shares	Defined	2026-02-17
2025-09-30	$32,111,569	19,211	-22.1%	Shares	Defined	2025-11-14
2025-06-30	$44,266,293	24,651	-3.1%	Shares	Defined	2025-08-14
2025-03-31	$48,988,755	25,438	-49.0%	Shares	Defined	2025-05-13
2024-12-31	$97,109,069	49,926	-17.7%	Shares	Defined	2025-02-12
2024-09-30	$102,916,932	60,675	-13.1%	Shares	Defined	2024-11-14
2024-06-30	$126,838,016	69,789	+14.4%	Shares	Defined	2024-08-14
2024-03-31	$109,463,064	61,006	-9.5%	Shares	Defined	2024-05-15
2023-12-31	$101,409,077	67,381	-4.9%	Shares	Defined	2024-02-12
2023-09-30	$105,926,252	70,821	-11.1%	Shares	Defined	2023-11-14
2023-06-30	$110,605,846	79,635	+12.6%	Shares	Defined	2023-08-14
2023-03-31	$97,421,601	70,724	-15.2%	Shares	Defined	2023-05-12
2022-12-31	$117,918,347	83,374	-7.4%	Shares	Defined	2023-02-13
2022-09-30	$117,284,829	90,010	-51.6%	Shares	Defined	2022-11-14
2022-06-30	$231,902,299	186,098	-12.6%	Shares	Defined	2022-08-15
2022-03-31	$242,044,115	213,022	-3.9%	Shares	Defined	2022-05-16
2021-12-31	$224,638,666	221,559	-1.0%	Shares	Defined	2022-02-11
2021-09-30	$239,442,893	223,860	-5.4%	Shares	Defined	2021-11-15
2021-06-30	$271,701,960	236,668	+0.3%	Shares	Defined	2021-08-16
2021-03-31	$263,077,375	235,965	-5.9%	Shares	Defined	2021-05-17
2020-12-31	$250,885,473	250,720	+4.1%	Shares	Defined	2021-02-12
2020-09-30	$187,624,487	240,853	-4.8%	Shares	Defined	2020-11-16
2020-06-30	$224,665,286	253,010	+3.7%	Shares	Defined	2020-08-14
2020-03-31	$221,954,460	243,906	—	Shares	Defined	2020-05-14
No filing history on record for this holder in this stock.