13F-HR: White Mountains Insurance Group 13F Holdings — September 30,
Institutional Holdings Report (13F)
White Mountains Insurance Group Ltd reported 2 holdings worth $374.9M for the period ended September 30, 2026.
Summary
- White Mountains Insurance Group Ltd reported 2 holdings worth $374.9M as of September 30, 2026.
- SPDR S&P 500 ETF TR — $204.0M (54.42%), 267,500 SH.
- MEDIAALPHA INC — $170.9M (45.58%), 17,856,614 SH.
Top Holdings
White Mountains Insurance Group Ltd · 2 positions · $374.9M total · as of September 30, 2026
| Issuer | Value | % Port. | Shares |
|---|---|---|---|
| SPDR S&P 500 ETF TR | $204.0M | 54.42% | 267,500 |
| MEDIAALPHA INC | $170.9M | 45.58% | 17,856,614 |
Keywords
13F, institutional holdings, White Mountains Insurance Group Ltd, SPDR S&P 500 ETF TR, MEDIAALPHA INC
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