SEM
Select Medical Holdings CorpCompany with tickers: SEM
Market Cap
$2.05B
Shares Outstanding
124,016,800
CIK
1320414
CUSIP
81619Q105
13F Activity (30d)
4 filings
3 filers
Website
Visit website
Investor Relations
Investor relations
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 |
|---|---|---|---|---|
| 2026-05-04 | 1,423,473 | 1,266,737 | 2,690,210 | 47.6% |
| 2026-04-27 | 1,613,044 | 3,914,932 | 5,527,976 | 61.7% |
| 2026-04-20 | 1,034,180 | 646,176 | 1,680,356 | 35.6% |
| 2026-04-13 | 1,525,360 | 4,471,310 | 5,996,670 | 60.3% |
| 2026-04-06 | 1,390,754 | 791,466 | 2,182,220 | 39.0% |
| 2026-03-30 | 1,815,104 | 693,726 | 2,508,830 | 63.8% |
| 2026-03-23 | 2,609,334 | 995,405 | 3,604,739 | 48.0% |
| 2026-03-16 | 5,271,209 | 8,627,079 | 13,898,288 | 66.6% |
| 2026-03-09 | 6,926,192 | 11,645,341 | 18,571,533 | 65.6% |
| 2026-03-02 | 6,371,949 | 5,287,869 | 11,659,818 | 47.6% |
| 2026-02-23 | 1,318,090 | 616,976 | 1,935,066 | 41.8% |
| 2026-02-16 | 1,584,226 | 1,393,832 | 2,978,058 | 44.5% |
| 2026-02-09 | 1,302,417 | 944,984 | 2,247,401 | 46.4% |
| 2026-02-02 | 891,758 | 502,228 | 1,393,986 | 38.7% |
| 2026-01-26 | 621,724 | 448,877 | 1,070,601 | 36.0% |
| 2026-01-19 | 573,644 | 227,393 | 801,037 | 36.2% |
| 2026-01-12 | 592,090 | 343,125 | 935,215 | 34.9% |
| 2026-01-05 | 496,463 | 302,847 | 799,310 | 30.7% |
| 2025-12-29 | 587,642 | 1,027,991 | 1,615,633 | 49.4% |
| 2025-12-22 | 542,429 | 1,463,491 | 2,005,920 | 55.2% |
| 2025-12-15 | 1,163,607 | 1,834,632 | 2,998,239 | 38.5% |
| 2025-12-08 | 988,823 | 1,474,621 | 2,463,444 | 46.4% |
| 2025-12-01 | 1,717,233 | 852,534 | 2,569,767 | 45.1% |
| 2025-11-24 | 1,932,846 | 838,138 | 2,770,984 | 38.4% |
| 2025-11-17 | 1,076,092 | 469,549 | 1,545,641 | 34.8% |
| 2025-11-10 | 1,295,040 | 513,985 | 1,809,025 | 38.3% |
| 2025-11-03 | 1,861,548 | 442,765 | 2,304,313 | 37.9% |
| 2025-10-27 | 2,265,559 | 749,832 | 3,015,391 | 42.5% |
| 2025-10-20 | 979,466 | 761,083 | 1,740,549 | 36.1% |
| 2025-10-13 | 1,076,147 | 349,567 | 1,425,714 | 35.3% |
| 2025-10-06 | 2,935,981 | 1,645,046 | 4,581,027 | 45.7% |
| 2025-09-29 | 1,641,771 | 992,119 | 2,633,890 | 41.8% |
| 2025-09-22 | 1,016,000 | 442,463 | 1,458,463 | 31.5% |
| 2025-09-15 | 1,027,367 | 952,733 | 1,980,100 | 32.5% |
| 2025-09-08 | 945,513 | 975,603 | 1,921,116 | 40.9% |
| 2025-09-01 | 903,395 | 410,115 | 1,313,510 | 38.3% |
| 2025-08-25 | 937,623 | 525,241 | 1,462,864 | 36.2% |
| 2025-08-18 | 1,258,610 | 507,182 | 1,765,792 | 40.2% |
| 2025-08-11 | 1,784,243 | 652,031 | 2,436,274 | 43.1% |
| 2025-08-04 | 2,206,276 | 677,120 | 2,883,396 | 33.9% |
| 2025-07-28 | 1,757,742 | 756,299 | 2,514,041 | 35.9% |
| 2025-07-21 | 876,165 | 461,868 | 1,338,033 | 34.0% |
| 2025-07-14 | 1,207,189 | 730,585 | 1,937,774 | 38.5% |
| 2025-07-07 | 1,170,188 | 585,044 | 1,755,232 | 35.5% |
| 2025-06-30 | 912,459 | 241,434 | 1,153,893 | 32.2% |
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