White Mountains Insurance Group, Ltd. (WTM)

White Mountains Insurance Group Employees

White Mountains Insurance Group had 1,648 employees as of December 31, 2025. The number of employees increased by 755 or 84.55% compared to the previous year. That makes White Mountains Insurance Group the 11,497th largest employer in the world and 1,855th in the United States.

• Employees: 1,648
• Change (1Y): 755
• Growth (1Y): 84.55%
• Revenue / Employee: $1,807,464
• Profits / Employee: $666,626
• Market Cap: 5.24B

Employees Chart

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Employees History

Date	Employees	Change (1Y)	Growth (1Y)
Dec 31, 2025	1,648	755	84.55%
Dec 31, 2024	893	111	14.19%
Dec 31, 2023	782	-21	-2.62%
Dec 31, 2022	803	-845	-51.27%
Dec 31, 2021	1,648	282	20.64%

Data Source: S&P Global Market Intelligence Last updated: Dec 31, 2025

Employee data is provided by S&P Global Market Intelligence and updates once per year after the filing of each annual report.

Update frequency:

Yearly

Last checked:

Oct 15, 2026

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