HoldcoTracker

White Mountains Insurance Group

Q2 2026 filing · filed 2026-08-12 · 45 days ago · 2 positions

Portfolio at filing $394M
Current portfolio $340M
Since filing -13.6%
vs S&P since filing -17%
13-F / mkt cap 6.8%
Ticker Name Current Value vs Filing % % of Portfolio vs Last Filing
SPY SPDR S&P 500 ETF TR $175M +3.3% 51.3% —
MAX MEDIAALPHA INC $166M -26.3% 48.7% —

Portfolio reflects White Mountains Insurance Group's 13-F filed 2026-08-12 (2026-06-30 quarter-end), marked to most recent close.