Mason Hawkins's WTM Position Overview
Mason Hawkins (via Southeastern Asset Management Inc/Tn/) currently holds 31,652 shares of White Mountains Insurance Group, Ltd. (WTM) worth $52.91 M, representing 2.70% of the portfolio. First purchased in 2021-Q4, this medium-term investment has been held for 16 quarters.
Based on 13F filings, Mason Hawkins has maintained a strategic position in WTM, demonstrating sustained confidence in this investment. Largest addition occurred in Q1 2022, adding 73,901 shares. Largest reduction occurred in Q4 2022, reducing 57,104 shares.
Analysis based on 13F filings available since 2013 Q2
Mason Hawkins's White Mountains Insurance Group (WTM) Holding Value Over Time
Track share changes against reported price movement
Quarterly White Mountains Insurance Group (WTM) Trades by Mason Hawkins
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2021 | +51,602 | New Buy | 51,602 | $1013.89 |
| Q1 2022 | +73,901 | Add 143.21% | 125,503 | $1136.24 |
| Q2 2022 | +100 | Add 0.08% | 125,603 | $1246.13 |
| Q3 2022 | -13,006 | Reduce 10.35% | 112,597 | $1303.02 |
| Q4 2022 | -57,104 | Reduce 50.72% | 55,493 | $1414.33 |
| Q1 2023 | -1,960 | Reduce 3.53% | 53,533 | $1377.49 |
| Q2 2023 | -11,316 | Reduce 21.14% | 42,217 | $1388.91 |
| Q3 2023 | -9,272 | Reduce 21.96% | 32,945 | $1495.69 |
| Q4 2023 | -499 | Reduce 1.51% | 32,446 | $1505.01 |
| Q1 2024 | -7,738 | Reduce 23.85% | 24,708 | $1794.30 |
| Q2 2024 | -3,285 | Reduce 13.30% | 21,423 | $1817.45 |
| Q3 2024 | -685 | Reduce 3.20% | 20,738 | $1.70 |
| Q4 2024 | -1,494 | Reduce 7.20% | 19,244 | $1945.06 |
| Q1 2025 | -760 | Reduce 3.95% | 18,484 | $1925.81 |
| Q2 2025 | +2,610 | Add 14.12% | 21,094 | $1795.72 |
| Q3 2025 | +10,558 | Add 50.05% | 31,652 | $1671.52 |
Mason Hawkins's White Mountains Insurance Group Investment FAQs
Mason Hawkins first purchased White Mountains Insurance Group, Ltd. (WTM) in Q4 2021, acquiring 51,602 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mason Hawkins has held White Mountains Insurance Group, Ltd. (WTM) for 16 quarters since Q4 2021. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mason Hawkins's largest addition to White Mountains Insurance Group, Ltd. (WTM) was in Q1 2022, adding 125,503 shares worth $142.6 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
According to the latest 13F filing for Q3 2025, Mason Hawkins's firm, Southeastern Asset Management Inc/Tn/, owns 31,652 shares of White Mountains Insurance Group, Ltd. (WTM), valued at approximately $52.91 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
As of the Q3 2025 filing, White Mountains Insurance Group, Ltd. (WTM) represents approximately 2.70% of Mason Hawkins's publicly disclosed stock portfolio, making it one of their key holdings. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Mason Hawkins's peak holding in White Mountains Insurance Group, Ltd. (WTM) was 125,603 shares, as reported at the end of Q2 2022. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.