WHITE MOUNTAINS INSURANCE GP · CUSIP G9618E107 · CIK 1080298
As of 2026-06-30, REINHART PARTNERS, LLC. reported 44.48K WTM (shares), valued at $92.27M, or 2.11% of its reported non-derivative portfolio. Filed 2026-07-08.
Verify history & sources →Shares increased 19.01%; reported value increased 12.32%, and weight changed -0.25 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.
Left: % · Right: Shares · Independently scaled axes
Exact data and methodology
Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.
| Quarter | Weight | Quantity | Source |
|---|---|---|---|
| Q2 2026 | 2.11% | 44,480 | SEC filing ↗Filed Jul 8, 2026 |
| Q1 2026 | 2.36% | 37,374 | SEC filing ↗Filed Apr 13, 2026 |
| Q4 2025 | 2.74% | 43,973 | SEC filing ↗Filed Feb 10, 2026 |
| Q3 2025 | 2.26% | 41,609 | SEC filing ↗Filed Oct 28, 2025 |
| Q2 2025 | 2.56% | 41,694 | SEC filing ↗Filed Jul 9, 2025 |
| Q1 2025 | 2.98% | 42,478 | SEC filing ↗Filed Apr 11, 2025 |
| Q4 2024 | 2.86% | 38,272 | SEC filing ↗Filed Jan 13, 2025 |
| Q3 2024 | 2.54% | 39,369 | SEC filing ↗Filed Oct 9, 2024 |
| Q2 2024 | 2.86% | 37,879 | SEC filing ↗Filed Jul 18, 2024 |
| Q1 2024 | 2.79% | 38,225 | SEC filing ↗Filed Apr 3, 2024Amended |
| Q4 2023 | 2.50% | 37,819 | SEC filing ↗Filed Jan 16, 2024 |
| Q3 2023 | 2.86% | 36,859 | SEC filing ↗Filed Oct 25, 2023 |
History & evidence by quarter
| Quarter | Weight | Quantity | Value | Change explained | Source |
|---|---|---|---|---|---|
| Q3 2023 | 2.86% | 36,859 | $55.13M | The prior quarter is outside the free window. Sign in for the comparison. | SEC filing ↗ Filed Oct 25, 2023 |
| Q4 2023 | 2.50% | 37,819 | $56.92M | Shares increased 2.60%; reported value increased 3.24%, and weight changed -0.36 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Jan 16, 2024 |
| Q1 2024 | 2.79% | 38,225 | $68.59M | Shares increased 1.07%; reported value increased 20.50%, and weight changed +0.29 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Apr 3, 2024 |
| Q2 2024 | 2.86% | 37,879 | $68.84M | Shares decreased 0.91%; reported value increased 0.37%, and weight changed +0.07 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Jul 18, 2024 |
| Q3 2024 | 2.54% | 39,369 | $66.78M | Shares increased 3.93%; reported value decreased 3.00%, and weight changed -0.32 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Oct 9, 2024 |
| Q4 2024 | 2.86% | 38,272 | $74.44M | Shares decreased 2.79%; reported value increased 11.48%, and weight changed +0.32 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Jan 13, 2025 |
| Q1 2025 | 2.98% | 42,478 | $81.80M | Shares increased 10.99%; reported value increased 9.89%, and weight changed +0.12 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Apr 11, 2025 |
| Q2 2025 | 2.56% | 41,694 | $74.90M | Shares decreased 1.85%; reported value decreased 8.44%, and weight changed -0.42 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Jul 9, 2025 |
| Q3 2025 | 2.26% | 41,609 | $69.58M | Shares decreased 0.20%; reported value decreased 7.10%, and weight changed -0.30 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Oct 28, 2025 |
| Q4 2025 | 2.74% | 43,973 | $91.41M | Shares increased 5.68%; reported value increased 31.38%, and weight changed +0.48 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 10, 2026 |
| Q1 2026 | 2.36% | 37,374 | $82.15M | Shares decreased 15.01%; reported value decreased 10.14%, and weight changed -0.38 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Apr 13, 2026 |
| Q2 2026 | 2.11% | 44,480 | $92.27M | Shares increased 19.01%; reported value increased 12.32%, and weight changed -0.25 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Jul 8, 2026 |
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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.