WTMWhite Mountains Insurance Group, Ltd.

$2,054.18

What is the market doing?

What the tape says about WTM

White Mountains Insurance Group, Ltd. is +17% over the past year while the S&P 500 is +20%: 3.8 points behind the market.

+17%

1-year return · S&P 500 +20%

vs 200-day average
−2.7%

vs 200-day average · below trend, but not far

RSI (14)
36

RSI (14) · neutral

Below its 52-week high
11%

Below its 52-week high

2024-08-15$1,649.75 – $2,319.41 · dashed line: 200-day average2026-09-08
Details
Last close2026-09-08
$2,054.18
1 monthS&P 500 −0.30%
−4.0%
1 yearS&P 500 +20%
+17%
5 yearsS&P 500 +85%
+81%
vs 50-day average$2,112.02
−2.7%
52-week high
$2,319.41
52-week low
$1,649.75
Annualised volatility
24%
Calendar-year price return
YearReturn
2026 (year to date)−1.1%
2025+6.9%
2024+29%
2023+6.5%
2022+40%
2021+1.4%
2020−10%
2019+30%
2018+0.88%
2017+1.9%
Average return by calendar month, 2016–2026
MonthYearsPositiveAverage
Jan107 of 10+2.7%
Feb106 of 10+2.2%
Mar104 of 10−1.1%
Apr106 of 10+0.44%
May107 of 10+1.4%
Jun107 of 10+0.06%
Jul114 of 11+1.7%
Aug118 of 11+1.4%
Sep113 of 11−4.1%
Oct105 of 10+3.7%
Nov108 of 10+3.1%
Dec105 of 10−0.44%

End-of-day closes from IEX; the S&P 500 comparison uses SPY over the same window. Prices are a reference point, not a basis for trading decisions.