Spero Therapeutics, Inc. (SPRO)
NASDAQ: SPRO · Real-Time Price · USD
1.120
+0.010 (0.90%)
At close: Sep 17, 2026, 4:00 PM EDT
1.130
+0.010 (0.89%)
After-hours: Sep 17, 2026, 7:49 PM EDT
Spero Therapeutics Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Sep 17, 2026 | 1.14 | 1.14 | 1.11 | 1.12 | 1.12 | 0.90% | 176,328 |
| Sep 16, 2026 | 1.12 | 1.14 | 1.10 | 1.11 | 1.11 | -1.77% | 439,623 |
| Sep 15, 2026 | 1.14 | 1.15 | 1.11 | 1.13 | 1.13 | -0.88% | 222,298 |
| Sep 14, 2026 | 1.13 | 1.16 | 1.13 | 1.14 | 1.14 | 0.88% | 265,870 |
| Sep 11, 2026 | 1.13 | 1.15 | 1.13 | 1.13 | 1.13 | 0.89% | 308,629 |
| Sep 10, 2026 | 1.18 | 1.18 | 1.12 | 1.12 | 1.12 | -4.27% | 568,383 |
| Sep 9, 2026 | 1.20 | 1.21 | 1.17 | 1.17 | 1.17 | -1.68% | 367,029 |
| Sep 8, 2026 | 1.21 | 1.22 | 1.19 | 1.19 | 1.19 | -1.65% | 347,513 |
| Sep 4, 2026 | 1.20 | 1.22 | 1.19 | 1.21 | 1.21 | -0.82% | 362,870 |
| Sep 3, 2026 | 1.22 | 1.23 | 1.20 | 1.22 | 1.22 | - | 193,314 |
| Sep 2, 2026 | 1.20 | 1.24 | 1.20 | 1.22 | 1.22 | 1.67% | 169,512 |
| Sep 1, 2026 | 1.22 | 1.22 | 1.18 | 1.20 | 1.20 | -1.64% | 382,262 |
| Aug 31, 2026 | 1.20 | 1.23 | 1.20 | 1.22 | 1.22 | 1.67% | 330,164 |
| Aug 28, 2026 | 1.21 | 1.22 | 1.18 | 1.20 | 1.20 | -0.83% | 306,001 |
| Aug 27, 2026 | 1.22 | 1.23 | 1.18 | 1.21 | 1.21 | -0.82% | 537,626 |
| Aug 26, 2026 | 1.22 | 1.23 | 1.20 | 1.22 | 1.22 | -0.81% | 154,509 |
| Aug 25, 2026 | 1.23 | 1.26 | 1.20 | 1.23 | 1.23 | 1.23% | 645,512 |
| Aug 24, 2026 | 1.22 | 1.24 | 1.20 | 1.22 | 1.22 | -0.41% | 366,910 |
| Aug 21, 2026 | 1.22 | 1.25 | 1.21 | 1.22 | 1.22 | 0.83% | 359,136 |
| Aug 20, 2026 | 1.22 | 1.27 | 1.20 | 1.21 | 1.21 | -1.63% | 557,850 |
| Aug 19, 2026 | 1.20 | 1.24 | 1.19 | 1.23 | 1.23 | 2.50% | 479,371 |
| Aug 18, 2026 | 1.20 | 1.20 | 1.18 | 1.20 | 1.20 | 0.84% | 477,407 |
| Aug 17, 2026 | 1.21 | 1.24 | 1.19 | 1.19 | 1.19 | -3.25% | 290,358 |
| Aug 14, 2026 | 1.26 | 1.26 | 1.19 | 1.23 | 1.23 | -0.81% | 744,543 |
| Aug 13, 2026 | 1.26 | 1.30 | 1.21 | 1.24 | 1.24 | 4.20% | 1,291,707 |
| Aug 12, 2026 | 1.24 | 1.25 | 1.19 | 1.19 | 1.19 | -3.25% | 760,436 |
| Aug 11, 2026 | 1.24 | 1.25 | 1.21 | 1.23 | 1.23 | - | 361,559 |
| Aug 10, 2026 | 1.25 | 1.28 | 1.23 | 1.23 | 1.23 | -2.38% | 350,798 |
| Aug 7, 2026 | 1.27 | 1.28 | 1.24 | 1.26 | 1.26 | -0.79% | 459,025 |
| Aug 6, 2026 | 1.26 | 1.28 | 1.23 | 1.27 | 1.27 | 0.79% | 974,681 |
| Aug 5, 2026 | 1.25 | 1.28 | 1.21 | 1.26 | 1.26 | 2.44% | 574,907 |
| Aug 4, 2026 | 1.15 | 1.25 | 1.15 | 1.23 | 1.23 | 6.96% | 752,105 |
| Aug 3, 2026 | 1.19 | 1.22 | 1.13 | 1.15 | 1.15 | -1.71% | 1,373,121 |
| Jul 31, 2026 | 1.20 | 1.21 | 1.17 | 1.17 | 1.17 | -2.50% | 824,576 |
| Jul 30, 2026 | 1.20 | 1.22 | 1.18 | 1.20 | 1.20 | 0.84% | 487,670 |
| Jul 29, 2026 | 1.20 | 1.21 | 1.16 | 1.19 | 1.19 | -0.42% | 1,055,670 |
| Jul 28, 2026 | 1.18 | 1.28 | 1.15 | 1.20 | 1.20 | 1.27% | 1,602,358 |
| Jul 27, 2026 | 1.20 | 1.23 | 1.16 | 1.18 | 1.18 | -0.84% | 1,346,955 |
| Jul 24, 2026 | 1.14 | 1.23 | 1.08 | 1.19 | 1.19 | 2.59% | 11,767,489 |
| Jul 23, 2026 | 1.28 | 1.28 | 1.10 | 1.16 | 1.16 | -8.66% | 3,732,613 |
| Jul 22, 2026 | 1.38 | 1.41 | 1.25 | 1.27 | 1.27 | -7.97% | 1,990,449 |
| Jul 21, 2026 | 1.43 | 1.44 | 1.37 | 1.38 | 1.38 | -4.17% | 2,181,809 |
| Jul 20, 2026 | 1.57 | 1.57 | 1.41 | 1.44 | 1.44 | -8.86% | 1,718,822 |
| Jul 17, 2026 | 1.52 | 1.64 | 1.50 | 1.58 | 1.58 | 0.64% | 1,249,349 |
| Jul 16, 2026 | 1.68 | 1.69 | 1.52 | 1.57 | 1.57 | -7.65% | 2,627,725 |
| Jul 15, 2026 | 1.71 | 1.71 | 1.63 | 1.70 | 1.70 | - | 1,425,250 |
| Jul 14, 2026 | 2.17 | 2.34 | 1.67 | 1.70 | 1.70 | -22.02% | 11,306,840 |
| Jul 13, 2026 | 2.11 | 2.19 | 2.07 | 2.18 | 2.18 | 3.81% | 703,993 |
| Jul 10, 2026 | 2.12 | 2.16 | 2.05 | 2.10 | 2.10 | -0.94% | 482,147 |
| Jul 9, 2026 | 2.19 | 2.20 | 2.12 | 2.12 | 2.12 | -2.30% | 369,777 |