Douglass Winthrop Advisors, LLC

Position in WTM — White Mountains Insurance Group Ltd

CIK 1308527 NEW YORK, NY

Position in WTM

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$329,544

+$17,840 QoQ

Shares Held

150

0.0% QoQ

Ownership

0.006%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

8 quarters on record

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

Financial Services · as of Mar 31, 2026

Douglass Winthrop Advisors, LLC holds $159,334,211 across 5 Insurance - Property & Casualty names. WTM ranks #5 (0.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MKL	Markel Group Inc.	80,498	$154,078,798
2	CB	Chubb Ltd	8,346	$2,720,211
3	TRV	Travelers Companies, Inc.	6,153	$1,794,707
4	PGR	Progressive Corp/Oh/	2,073	$410,951
5	WTM	White Mountains Insurance Group Ltd This page	150	$329,544

8 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$329,544	150	0.0%	Shares	Sole	2026-05-14
2025-12-31	$311,704	150	0.0%	Shares	Sole	2026-02-12
2025-09-30	$250,728	150	-3.2%	Shares	Sole	2025-11-13
2025-06-30	$278,336	155	-18.8%	Shares	Sole	2025-08-14
2025-03-31	$367,829	191	-68.2%	Shares	Sole	2025-05-14
2020-09-30	$467,400	600	0.0%	Shares	Sole	2020-11-12
2020-06-30	$532,782	600	-13.2%	Shares	Sole	2020-07-17
2020-03-31	$628,810	691	—	Shares	Sole	2020-04-23
No filing history on record for this holder in this stock.