WHITE MOUNTAINS INSURANCE GROUP, LTD
WHITE MOUNTAINS INSURANCE GROUP, LTD (WTM) has a dated narrative snapshot, but its priced-in model claim is temporarily suppressed because the model-solve record is unavailable or has changed.
355 institutional managers reported holding WTM in 13F filings for the quarter ended 2026-03-31. Together they hold about 90% of the company; the top 10 hold 49%. 41 opened new positions that quarter. Held by Vanguard Group, Dimensional Fund Advisors, BlackRock, among others. On the short side, 119k shares were sold short as of the 2026-06-15 count, about 5% of shares outstanding (4.5 days of typical volume to cover).
Quarterly 13F filings arrive up to 45 days after quarter end, so the picture is never current (filed through 2026-05-29). Nothing here is investment advice.
WTM has cut its share count 20.3% over the past five years, spending $985.00M on repurchases. It pays a dividend, and has paid one every year in our records (17 and counting); the current rate is $1.00 a share annually. Cash returned over the past three years: $7.50M in dividends and $236.40M in repurchases.
Share counts are split-adjusted; repurchase totals are gross of share issuance. Nothing here is investment advice.
Open-market insider buys at WTM over the trailing three years: 2023: 5 buys totaling $1.48M. 15 officers and directors are on file.
Code P open-market purchases from SEC Form 4 filings, non-derivative, excluding scheduled 10b5-1 plans. Nothing here is investment advice.
WTM's recent reports: the day-one move, then what the following quarter actually did.
| report | day one | next quarter |
|---|---|---|
| 2023-08-08 | 0.0% | -4.0% |
| 2023-11-07 | 0.0% | +2.8% |
| 2024-02-27 | 0.0% | -1.0% |
| 2024-05-10 | +0.4% | -7.2% |
Day-one is the close-to-close move around the filing. Nothing here is investment advice.
WTM's latest 8-K filings: 2026-08-06 (items 2.02, 9.01); 2026-06-05 (items 7.01, 9.01); 2026-05-21 (items 5.02, 5.07, 9.01); 2026-05-15 (items 1.01, 2.03, 9.01); 2026-05-06 (items 2.02, 9.01).
Item codes are the SEC's own classification of what each report discloses. Dates link to the filing on EDGAR. Nothing here is investment advice.
Model solve date: 2026-Q2
Narrative composed: June 28, 2026
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For informational and research purposes only. Not investment advice. Not a recommendation to buy, sell, or hold any security. boothcheck is not a registered investment adviser. Past performance does not guarantee future results.