IR
Superintel
OverviewMarketsWatchlist
© 2026 IR SuperintelMethodologyContact

White Mountains Insurance Group LTD

Q3 2025 Holdings

Filed 2025-11-13 | 1 holdings | $203.2M | 13F-HR | View on SEC ↗ · Holdings Table ↗

Sign in to see sub-manager breakdown

IssuerClassCUSIPValue ↓Shares% Portfolio
Mediaalpha Inc(MAX)CL A58450V104$203.2M17,856,614100.0%