WTM
White Mountains Insurance Group LtdCompany with tickers: WTM
CIK
776867
CUSIP
G9618E107
Shares Outstanding
2,476,670
Website
https://www.whitemountains.com
13F Activity (30d)
7 filings
3 filers
Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.
Off-Exchange Volume History
| Week Start | ATS Volume | Non-ATS OTC Volume | Total Off-Exchange | % of FINRA Weekly Volume |
|---|---|---|---|---|
| 2026-06-01 | 31,438 | 18,774 | 50,212 | 36.4% |
| 2026-05-25 | 15,041 | 14,396 | 29,437 | 38.4% |
| 2026-05-18 | 20,592 | 10,528 | 31,120 | 35.2% |
| 2026-05-11 | 24,776 | 8,312 | 33,088 | 32.7% |
| 2026-05-04 | 25,134 | 13,843 | 38,977 | 33.0% |
| 2026-04-27 | 14,789 | 9,374 | 24,163 | 37.3% |
| 2026-04-20 | 11,751 | 9,027 | 20,778 | 39.7% |
| 2026-04-13 | 15,019 | 14,420 | 29,439 | 49.1% |
| 2026-04-06 | 18,439 | 13,477 | 31,916 | 42.4% |
| 2026-03-30 | 19,841 | 11,828 | 31,669 | 39.5% |
| 2026-03-23 | 16,874 | 8,255 | 25,129 | 31.8% |
| 2026-03-16 | 18,596 | 10,219 | 28,815 | 29.9% |
| 2026-03-09 | 21,811 | 24,351 | 46,162 | 42.6% |
| 2026-03-02 | 27,506 | 21,201 | 48,707 | 47.0% |
| 2026-02-23 | 20,750 | 25,234 | 45,984 | 50.7% |
| 2026-02-16 | 15,000 | 12,959 | 27,959 | 50.0% |
| 2026-02-09 | 26,152 | 20,476 | 46,628 | 49.3% |
| 2026-02-02 | 24,569 | 14,622 | 39,191 | 46.8% |
| 2026-01-26 | 21,819 | 12,125 | 33,944 | 39.2% |
| 2026-01-19 | 10,245 | 18,116 | 28,361 | 51.4% |
| 2026-01-12 | 17,889 | 17,275 | 35,164 | 45.9% |
| 2026-01-05 | 19,731 | 24,293 | 44,024 | 42.4% |
| 2025-12-29 | 11,775 | 16,955 | 28,730 | 45.4% |
| 2025-12-22 | 16,329 | 15,073 | 31,402 | 45.6% |
| 2025-12-15 | 27,681 | 13,634 | 41,315 | 36.5% |
| 2025-12-08 | 32,999 | 14,730 | 47,729 | 40.9% |
| 2025-12-01 | 24,619 | 11,859 | 36,478 | 35.4% |
| 2025-11-24 | 15,758 | 11,396 | 27,154 | 44.1% |
| 2025-11-17 | 23,783 | 30,653 | 54,436 | 50.3% |
| 2025-11-10 | 25,670 | 15,303 | 40,973 | 45.5% |
| 2025-11-03 | 32,720 | 18,145 | 50,865 | 37.0% |
| 2025-10-27 | 23,692 | 29,178 | 52,870 | 43.2% |
| 2025-10-20 | 23,506 | 33,389 | 56,895 | 48.4% |
| 2025-10-13 | 25,223 | 44,757 | 69,980 | 42.0% |
| 2025-10-06 | 48,557 | 28,421 | 76,978 | 44.3% |
| 2025-09-29 | 64,238 | 32,249 | 96,487 | 42.1% |
| 2025-09-22 | 33,270 | 35,347 | 68,617 | 41.6% |
| 2025-09-15 | 26,041 | 38,828 | 64,869 | 36.4% |
| 2025-09-08 | 28,214 | 76,196 | 104,410 | 49.4% |
| 2025-09-01 | 22,208 | 25,632 | 47,840 | 45.7% |
| 2025-08-25 | 20,665 | 42,302 | 62,967 | 47.0% |
| 2025-08-18 | 22,836 | 37,569 | 60,405 | 45.8% |
| 2025-08-11 | 43,667 | 33,724 | 77,391 | 48.1% |
| 2025-08-04 | 23,737 | 47,813 | 71,550 | 47.9% |
| 2025-07-28 | 12,742 | 18,520 | 31,262 | 42.1% |
| 2025-07-21 | 9,305 | 17,714 | 27,019 | 34.0% |
| 2025-07-14 | 12,700 | 35,920 | 48,620 | 34.8% |
| 2025-07-07 | 20,167 | 29,596 | 49,763 | 26.0% |
| 2025-06-30 | 18,249 | 20,222 | 38,471 | 37.9% |
| 2025-06-23 | 27,009 | 32,966 | 59,975 | 49.5% |
Showing 1–50 of 50 weeks