TTEK
Tetra Tech Inc
stockNASDAQ
At CloseOct 20, 2026 3:59:52 PM EDT
34.96USD+0.953%(+0.33)1,496,237
Pre-marketOct 20, 2026 9:27:30 AM EDT
34.64USD+0.029%(+0.01)
As of 2026-09-30, there were 11,876,810 shares short with a short interest of 4.60%.
TTEK Short Interest - Official
TTEK Short Position Change - Official
TTEK 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 | 4.60 | 11,876,810 | 5.07 | +787,069 | +7.10 | 256,044,428 | 258,210,505 |
| 2026-09-15 | 4.29 | 11,089,741 | 6.10 | +416,134 | +3.90 | 256,044,428 | 258,210,505 |
| 2026-08-31 | 4.13 | 10,673,607 | 3.98 | -51,354 | -0.48 | 256,044,428 | 258,210,505 |
| 2026-08-14 | 4.15 | 10,724,961 | 4.36 | -1,102,120 | -9.32 | 256,044,428 | 258,210,505 |
| 2026-07-31 | 4.58 | 11,827,081 | 3.71 | -332,751 | -2.74 | 256,044,000 | 258,210,505 |
| 2026-07-15 | 4.71 | 12,159,832 | 4.64 | -24,090 | -0.20 | 259,524,699 | 258,210,246 |
| 2026-06-30 | 4.72 | 12,183,922 | 2.82 | +1,281,896 | +11.76 | 259,524,699 | 258,210,246 |
| 2026-06-15 | 4.22 | 10,902,026 | 2.91 | -2,420,276 | -18.17 | 259,524,699 | 258,210,246 |
| 2026-05-15 | 5.16 | 13,322,302 | 3.31 | +508,195 | +3.97 | 259,524,699 | 258,196,491 |
| 2026-04-30 | 4.94 | 12,814,107 | 4.19 | +1,547,542 | +13.74 | 259,525,000 | 259,224,142 |
| 2026-04-15 | 4.35 | 11,266,565 | 4.75 | -879,276 | -7.24 | 260,807,561 | 259,224,142 |
| 2026-03-31 | 4.69 | 12,145,841 | 4.00 | +1,052,965 | +9.49 | 260,807,561 | 259,224,142 |
| 2026-03-13 | 4.28 | 11,092,876 | 4.99 | +494,498 | +4.67 | 260,807,561 | 259,224,142 |
| 2026-02-27 | 4.09 | 10,598,378 | 3.46 | +1,571,854 | +17.41 | 260,807,561 | 259,224,142 |
| 2026-02-13 | 3.48 | 9,026,524 | 2.07 | +735,693 | +8.87 | 260,807,561 | 259,224,142 |
| 2026-01-30 | 3.20 | 8,290,831 | 3.46 | +461,222 | +5.89 | 260,811,000 | 259,224,142 |
| 2026-01-15 | 3.02 | 7,829,609 | 3.71 | -300,883 | -3.70 | 261,173,077 | 259,224,142 |
| 2025-12-31 | 3.14 | 8,130,492 | 5.18 | -112,182 | -1.36 | 260,828,236 | 259,224,142 |
| 2025-12-15 | 3.18 | 8,242,674 | 3.84 | -1,042,347 | -11.23 | 260,828,236 | 259,224,142 |
| 2025-11-28 | 3.58 | 9,285,021 | 3.04 | +750,855 | +8.80 | 260,828,236 | 259,315,719 |
| 2025-11-14 | 3.27 | 8,534,166 | 2.65 | +135,025 | +1.61 | 261,418,000 | 261,309,764 |
| 2025-10-31 | 3.21 | 8,399,141 | 4.18 | -1,800,573 | -17.65 | 262,773,412 | 261,309,764 |
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.