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Institutional

WHITE MOUNTAINS INSURANCE GROUP LTD (WTM)

CIK 0000776867
$313.4M
Reported AUM
2
Positions
Q1 2026
Period
2026-05-12
Filed

The Brief · WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) · Q1 2026

AI · grounded in 13F

WHITE MOUNTAINS INSURANCE GROUP LTD (WTM) increased its position in SPY by 403.33%. The fund added one new position to its portfolio. Total assets under management stood at $313,368,520 with two total positions held.

Portfolio · Q1 2026

MAX$166.1MSPY$147.3MW(

Top holdings

QoQ vs Q4 2025

#StockIssuerPriceDay %1Y Gr.5Y Gr.Value% of bookΔ shares (QoQ)Status
1MAXMEDIAALPHA INC$9.074.86%-14.11%-72.84%$166.1M52.99%—HELD
2SPYSPDR S&P 500 ETF TR$737.55-2.58%24.51%79.50%$147.3M47.01%+181,500+403.3%

Source: SEC EDGAR · accession 0001104659-26-059351. 13F discloses long positions only — shorts, foreign equities, and options are excluded.