White Mountains Insurance Group, Ltd.

WTM Financial Insurance Property & Casualty

White Mountains Insurance Group, Ltd.’s revenue for fiscal 2025 (year ended December 2025) was $3.7 billion, up 66.8% from fiscal 2024.

Revenue
+22.6%
EPS
+68.8%
Free cash flow
−131.3%
Total debt
+34.2%

Quarter to June 2026, against a year earlier

2,376.57 90.04 +3.94%
Market cap
$5.5B
P/E
5.2×
Fwd P/E
5.1×
Dividend yield
0.04%
F-score
6/9
Altman Z
n/a
Beneish M
n/a
Dividend safety
n/a

White Mountains Insurance Group, Ltd. (WTM) Operating margin

Alert me on Operating margin

White Mountains Insurance Group, Ltd.'s operating margin over the twelve months to 30 June 2026 was 40.8%, down 1.5 percentage points from fiscal 2025 (42.3%). Over the past ten years it has ranged from −91.5% (fiscal 2016) to 74.6% (fiscal 2020); the current reading is higher than 82% of that period. That is above the Insurance Property & Casualty industry median of 14.7% and above the Financial sector median of 0.00%.

Operating margin, annual

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Annual newest first

Period Operating margin Change (points)
FY2025 42.3% 22.72
FY2024 19.6% (11.65)
FY2023 31.2% 39.17
FY2022 −7.93% 32.37
FY2021 −40.3% (114.86)
FY2020 74.6% 27.01
FY2019 47.6% 92.52
FY2018 −45.0% (47.67)
FY2017 2.70% 94.20
FY2016 −91.5% (121.23)

Quarterly newest first

Period Operating margin Change (points)
Jun 2026 32.5% 31.78
Mar 2026 0.73% (67.05)
Dec 2025 67.8% 44.79
Sep 2025 23.0% (5.23)
42 more quarters

Against its own ten years

Low −91.5% High 74.6%
Ten-year median 19.6%
Current reading's percentile 86

Operating margin against peers

Company Operating margin
WTM White Mountains Insurance Group, Ltd. 40.8%
KNSL Kinsale Capital Group, Inc. compare 34.3%
RLI RLI Corp. compare 26.4%
PLMR Palomar Holdings, Inc. compare 24.9%
ORI Old Republic International Corporation compare 14.9%
THG The Hanover Insurance Group, Inc. compare 14.7%
HGTY Hagerty, Inc. compare 13.4%
MCY Mercury General Corporation compare 13.4%
SIGI Selective Insurance Group, Inc. compare 12.8%
Insurance Property & Casualty industry median 14.7%
Financial sector median 0.00%
Market median 0.00%

What Operating margin is

EBIT Margin tells an investor how much operating profit, before interest and taxes, a company keeps from each unit of revenue.

EBIT ÷ Revenue

The full definition of Operating margin →

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