White Mountains Insurance Group Ltd Portfolio Stock Holdings

White Mountains Insurance Group Ltd disclosed 2 stock positions valued at approximately $313.4 million in its latest SEC 13F filing. The largest holdings include MEDIAALPHA INC and SPDR S&P 500 ETF TR. The filing reflects positions held as of March 31, 2026 and was filed on May 12, 2026.

Report Period
March 31, 2026
No. of Stocks
2
Portfolio Value
$313.4M
Holdings by Sector
White Mountains Insurance Group Ltd Portfolio Holdings in Q1 2026

2 holdings in the latest reporting period.

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CompanySymbolSectorPortfolio %SharesChange (Shares)Change %Value
MEDIAALPHA INCMAXCommunication Services52.99%17,856,614--$166,066,510
SPDR S&P 500 ETF TRSPYOther47.01%226,500+181,500+403.33%$147,302,010