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White Mountains Insurance Group Portfolio holdings
AUM
$394M
Turnover
0%
1-Year Est. Return
22.47%
This Fund
S&P 500
This Quarter Est. Return
+26.42%
1 Year Est. Return
+22.47%
3 Year Est. Return
+104.83%
5 Year Est. Return
-46.79%
10 Year Est. Return
–
AUM
$394M
AUM Growth
+$80.2M
(+26%)
Cap. Flow
$0
Cap. Flow % of AUM
Cap. Flow %
0%
Top 10 Holdings %
Top 10 Hldgs %
100%
Holding
2
New
–
Increased
–
Reduced
–
Closed
–
Avg Time Held
3
years
Top 10 Avg Time Held
3
years
Top 20 Avg Time Held
3
years
Top Buys
No buys this quarter
Top Sells
No sells this quarter
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 57.03% |
| 2 | Miscellaneous | 42.97% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | Held Since | |
|---|---|---|---|---|---|---|---|
1
MediaAlpha
MAX
$873M
| $224M | 57.03% |
17,856,614
| – | – |
2020 Q4
22 quarters
|
|
2
State Street SPDR S&P 500 ETF Trust
SPY
$802B
| $169M | 42.97% |
226,500
| – | – |
2025 Q4
2 quarters
|
|
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White Mountains Insurance Group's Q2 2026 Portfolio in Review
As of Q2 2026, White Mountains Insurance Group held 2 positions worth $394M, up 26% from $313M the previous quarter. Its ten largest holdings account for 100% of the portfolio.
Trading was light in Q2 2026: portfolio turnover was 0%. White Mountains Insurance Group opened no new positions and made no exits, leaving the 2-position portfolio largely intact.
By sector, the portfolio is most concentrated in Communication Services at 57% of assets, up from 53% a quarter earlier, followed by Miscellaneous.
- White Mountains Insurance Group's ten largest holdings make up 100% of its $394M portfolio in Q2 2026.
- White Mountains Insurance Group opened 0 new positions and closed 0 in Q2 2026.
- White Mountains Insurance Group's portfolio value rose 26% quarter-over-quarter to $394M.
Based on White Mountains Insurance Group's 13F filing for Q2 2026, filed 12 Aug 2026.