WHITE MOUNTAINS INSURANCE GROUP LTD Concentrated Active

Location: Hanover, NH

CIK: 0000776867 · Show all filings

Period: Q2 2026 (← Previous)

Filing Date: Aug 12, 2026

Total Value: $394M (100.0% shares, 0.0% debt)

Holdings (2)

Unchanged Positions (2)

MAX MEDIAALPHA INC 57.0%

Value $224M Shares 17,856,614 Est. Cost $31.07 Unrealized —

SPY SPDR S&P 500 ETF TR 43.0%

Value $169M Shares 226,500 Est. Cost $656.61 Unrealized —

Ticker	Issuer	Shares	Value	%	Est. Cost	Unrealized	Class	CUSIP
MAX	MEDIAALPHA INC	17,856,614	$224M	57.0%	$31.07	—	CL A	58450V104
SPY	SPDR S&P 500 ETF TR	226,500	$169M	43.0%	$656.61	—	TR UNIT	78462F103