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Hamilton Insurance Group vs White Mountains Insurance Group: HG and WTM compared

Hamilton Insurance Group is the larger company: $828M of revenue in its latest quarter (Q3 2026) against $641M for White Mountains Insurance Group (Q3 2026). Hamilton Insurance Group is growing faster (+24% against -26% a year earlier). Hamilton Insurance Group is more profitable, with an operating margin of 27.4% against -3.6%.

Hamilton Insurance Group vs White Mountains Insurance Group, latest quarterHamilton Insurance Group vs White Mountains Insurance Group, latest quarterHamilton Insurance Group (HG)White Mountains Insurance Group (WTM)Revenue$828M$641MRevenue growth, Y/Y+24%-26%Operating margin27.4%-3.6%Net margin27.6%-4.6%

Where the money goes: HG and WTM

Hamilton Insurance Group (HG) · Q3 2026

Hamilton Insurance Group, Q3 2026: revenue $828M (+24% year over year), operating margin 27.4%, net earnings $228M, operating cash flow $267M. The chart follows the revenue to costs, profit and cash.

White Mountains Insurance Group (WTM) · Q3 2026

White Mountains Insurance Group, Q3 2026: revenue $641M (-26% year over year), operating margin -3.6%, net loss $29.6M, operating cash flow $357M. The chart follows the revenue to costs, profit and cash.

Hamilton Insurance Group (HG)White Mountains Insurance Group (WTM)
Latest quarterQ3 2026Q3 2026
Revenue$828M$641M
Revenue growth, Y/Y+24%-26%
Operating margin27.4%-3.6%
Net earnings$228M−$29.6M
Net margin27.6%-4.6%
Operating cash flow$267M$357M
Market value$3.7B$5.3B
P/E7.1×5.3×
Analysts’ mean target$39.43—

Questions

Which is bigger, Hamilton Insurance Group or White Mountains Insurance Group?

Hamilton Insurance Group is the larger company: $828M of revenue in its latest quarter (Q3 2026) against $641M for White Mountains Insurance Group (Q3 2026).

Is Hamilton Insurance Group or White Mountains Insurance Group growing faster?

Hamilton Insurance Group is growing faster (+24% against -26% a year earlier).

Which is more profitable, Hamilton Insurance Group or White Mountains Insurance Group?

Hamilton Insurance Group is more profitable, with an operating margin of 27.4% against -3.6%.

More: Hamilton Insurance Group earnings · how Hamilton Insurance Group makes money · White Mountains Insurance Group earnings · how White Mountains Insurance Group makes money

From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Nov 4, 2026; 10-Q filed Nov 5, 2026). Fiscal quarters can end on different dates. Not investment advice.