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Asset Manager ← All Institutions

WHITE MOUNTAINS INSURANCE GROUP LTD

Q1 2026 · Filed 2026-05-12

Q1 2026 Q4 2025 Q3 2025 Q2 2025

Market Value

$313M

+19.6%

Holdings

New Purchases

Added To

Closed

Reduced

Top 10 Concentration

100.0%

Turnover

0.0%

Top Buys (by % of Portfolio)

Symbol	Cur %	Prior %	Chg %	Value
SPY	47.01%	11.72%	+35.29%	$147M

Top Sells (by % of Portfolio)

Symbol	Cur %	Prior %	Chg %	Value
MAX	52.99%	88.28%	-35.29%	$166M

Sector Allocation Over Time

Market Cap Concentration

Tier	Holdings	Value	Weight
Mega Cap	1	$147M	47.0%
Small Cap	1	$166M	53.0%

Portfolio Analytics

Avg Market Cap

$384.5B

Median Market Cap

$384.5B

Avg P/E

12.1

Median P/E

12.1

Avg Dividend Yield

—%

Avg Beta

1.08

# Stocks

# ETFs / Funds

Top Holdings (2 total)

#	Symbol	% Port	Shares	Value	Avg Price	Q/Q Value Chg	Share Chg	Chg %	Status
1	MAX	52.99%	17,856,614	$166M	$9.30	-$65M	—	—
2	SPY	47.01%	226,500	$147M	$650.34	$117M	+181,500	+403.3%

View SEC EDGAR Filings for WHITE MOUNTAINS INSURANCE GROUP LTD →