Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

WHITE MOUNTAINS INSURANCE GROUP LTD 13F Holdings -- Portfolio & Top Positions (2026-06-30)

Name: WHITE MOUNTAINS INSURANCE GROUP LTD 13F Holdings (2026-06-30)
Creator: ko.io

WHITE MOUNTAINS INSURANCE GROUP LTD (CIK 776867) reported $393.6M across 2 reported positions in its SEC 13F filing for 2026-06-30. Largest positions: MAX ($224.5M, 57.03%), SPY ($169.1M, 42.97%). Source: SEC Form 13F.

Rank	Ticker	Company	Value	% Portfolio	Shares	Action
1	MAX	MEDIAALPHA INC	$224.5M	57.03%	17.9M	Hold
2	SPY	SPDR S&P 500 ETF TR	$169.1M	42.97%	226,500	Hold

Source: SEC Form 13F filings · as of 2026-06-30