WHITE MOUNTAINS INSURANCE GROUP LTD Concentrated Active

Location: Hanover, NH

CIK: 0000776867 · Show all filings

Period: Q1 2026 (← Previous) (Next →)

Filing Date: May 12, 2026

Total Value: $313M (100.0% shares, 0.0% debt)

Holdings (2)

MAX MEDIAALPHA INC 53.0%

Value $166M Shares 17,856,614 Est. Cost $31.07 Unrealized -68.1%

SPY SPDR S&P 500 ETF TR 47.0%

Value $147M Shares 226,500 Est. Cost $656.61 Unrealized —

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
MAX	MEDIAALPHA INC	17,856,614	$166M	53.0%	$31.07	-68.1%	CL A	58450V104
SPY	SPDR S&P 500 ETF TR	226,500	$147M	47.0%	$656.61	—	TR UNIT	78462F103