Filed: 2/12/2026ACC: 0001104659-26-014432
📋 What this filing means
WHITE MOUNTAINS INSURANCE GROUP LTD filed this quarterly 13F‑HR report disclosing 2 equity positions with a total reported market value of $261.93M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
2
Positions
$261.93M
Total AUM (reported)
17.90M
Total Shares
Allocation by class
CL A$231.24M88.3%
TR UNIT$30.69M11.7%
Portfolio Concentration
Top 3$261.93M100.0%
Top 3 weight
100.0%
Top 10 weight
100.0%
Voting Authority Distribution
Total shares with voting rights: 17.90M
Sole
Full voting authority
17.90M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole2
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings2
Rows:
MEDIAALPHA INC
SOLEShares17.86M
TypeSH
Market value$231.24M
88.28%
Sole
17.86M
Shared
0.00
None
0.00
SPDR S&P 500 ETF TR
SOLEShares45K
TypeSH
Market value$30.69M
11.72%
Sole
45K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
MEDIAALPHA INCSOLE | CL A | 17.86M | SH | $231.24M 88.28% | 17.86M | 0.00 | 0.00 |
SPDR S&P 500 ETF TRSOLE | TR UNIT | 45K | SH | $30.69M 11.72% | 45K | 0.00 | 0.00 |