CECO
Ceco Environmental Corp
stockNASDAQ
At CloseOct 23, 2026 3:59:57 PM EDT
49.09USD-4.698%(-2.42)1,095,300
Pre-marketOct 23, 2026 8:43:30 AM EDT
50.06USD-2.815%(-1.45)
After-hoursOct 23, 2026 4:59:30 PM EDT
49.40USD+0.631%(+0.31)
As of 2026-09-30, there were 1,909,836 shares short with a short interest of 3.71%.
CECO Short Interest - Official
CECO Short Position Change - Official
CECO Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | 3.71 | 1,909,836 | 2.78 | -57,913 | -2.94 | 58,569,830 | 51,520,000 |
| 2026-09-15 | 3.82 | 1,967,749 | 2.72 | +230,361 | +13.26 | 58,569,830 | 51,520,000 |
| 2026-08-31 | 3.37 | 1,737,388 | 2.68 | +102,769 | +6.29 | 58,569,830 | 51,520,000 |
| 2026-08-14 | 3.17 | 1,634,619 | 1.57 | -126,871 | -7.20 | 58,569,830 | 51,520,000 |
| 2026-07-31 | 5.56 | 1,761,490 | 1.79 | -72,740 | -3.97 | 58,403,031 | 31,662,613 |
| 2026-07-15 | 5.79 | 1,834,230 | 2.55 | -328,173 | -15.18 | 58,403,031 | 31,662,613 |
| 2026-06-30 | 6.84 | 2,162,403 | 2.53 | +256,179 | +13.44 | 58,403,031 | 31,613,109 |
| 2026-06-15 | 6.40 | 1,906,224 | 1.74 | -3,258,761 | -63.09 | 35,873,031 | 29,796,498 |
| 2026-05-15 | 17.13 | 5,164,985 | 5.94 | +902,884 | +21.18 | 35,873,031 | 30,159,892 |
| 2026-04-30 | 14.07 | 4,262,101 | 6.32 | +795,437 | +22.95 | 35,873,031 | 30,292,319 |
| 2026-04-15 | 11.44 | 3,466,664 | 8.71 | -20,325 | -0.58 | 35,840,781 | 30,292,319 |
| 2026-03-31 | 11.51 | 3,486,989 | 5.36 | +328,122 | +10.39 | 35,665,813 | 30,292,319 |
| 2026-03-13 | 10.43 | 3,158,867 | 4.02 | +677,252 | +27.29 | 35,665,813 | 30,292,319 |
| 2026-02-27 | 8.19 | 2,481,615 | 2.90 | +636,781 | +34.52 | 35,641,031 | 30,292,319 |
| 2026-02-13 | 6.09 | 1,844,834 | 6.24 | -197,239 | -9.66 | 35,641,031 | 30,292,319 |
| 2026-01-30 | 6.74 | 2,042,073 | 7.95 | -130,171 | -5.99 | 35,641,031 | 30,292,319 |
| 2026-01-15 | 7.17 | 2,172,244 | 9.92 | +29,996 | +1.40 | 35,641,031 | 30,292,319 |
| 2025-12-31 | 7.07 | 2,142,248 | 7.46 | -80,128 | -3.61 | 35,641,031 | 30,292,319 |
| 2025-12-15 | 7.34 | 2,222,376 | 7.52 | -70,778 | -3.09 | 35,641,031 | 30,292,319 |
| 2025-11-28 | 7.57 | 2,293,154 | 6.71 | +97,343 | +4.43 | 35,641,031 | 30,310,915 |
| 2025-11-14 | 7.24 | 2,195,811 | 5.56 | -475,574 | -17.80 | 35,641,031 | 30,310,915 |
| 2025-10-31 | 8.85 | 2,671,385 | 4.11 | +378,428 | +16.50 | 35,641,031 | 30,192,809 |
Historical data is split-adjusted.
1 Data from Finra. Finra publishes an updated file every two weeks.
2 Days to Cover (DTC) is also called Short Ratio. This is the Short Position / Average Daily Trading Volume.