Security record · archived quarter
WTM
White Mountains Insurance Group, Ltd. · Financial Services · Insurance - Diversified
10Tracked holders
n/aΔ holders
158.36KShares held
$287.38MReported value
+0New positions
−0Exits
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 99 | -4 | 1.16M | $2.41B | +3 | −8 |
| Q1 2026 | 107 | 0 | 1.13M | $2.49B | +3 | −4 |
| Q4 2025 | 108 | +2 | 1.27M | $2.64B | +3 | n/a |
| Q3 2025 | 16 | +1 | 649.64K | $1.09B | +1 | −1 |
| Q2 2025 | 13 | -1 | 533.60K | $958.13M | +1 | −2 |
| Q1 2025 | 11 | +1 | 169.09K | $325.53M | +1 | n/a |
| Q4 2024 | 10 | 0 | 193.12K | $375.52M | n/a | n/a |
| Q3 2024 | 9 | -1 | 149.43K | $253.48M | n/a | −1 |
| Q2 2024 | 10 | n/a | 158.36K | $287.38M | n/a | n/a |
Who holds it · Q2 2024
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Wellington Management ✦ | 69.79K | n/a | $126.84M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 2 | Geode Capital Management ✦ (passive) | 39.57K | n/a | $71.94M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 3 | Norges Bank ✦ (passive) | 30.11K | n/a | $54.72M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | AQR Capital Management ✦ | 10.45K | n/a | $18.53M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 5 | D. E. Shaw & Co. ✦ | 3.60K | n/a | $6.54M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 6 | Renaissance Technologies ✦ | 2.00K | n/a | $3.63M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | T. Rowe Price ✦ | 1.37K | n/a | $2.50M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | Bridgewater Associates ✦ | 756 | n/a | $1.37M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | Millennium Management ✦ | 364 | n/a | $661,552 | 0.0% | n/c | 1 | SEC ↗ |
| 10 | Two Sigma Investments ✦ | 353 | n/a | $641,560 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 363 holders, 2.21M shares, $4.62B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2024 ·
Methodology ·
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