Spero Therapeutics, Inc. (SPRO)
NASDAQ: SPRO · Real-Time Price · USD
1.220
+0.010 (0.83%)
At close: Aug 21, 2026, 4:00 PM EDT
1.230
+0.010 (0.82%)
After-hours: Aug 21, 2026, 7:39 PM EDT
Spero Therapeutics Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| 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 |
| Jul 8, 2026 | 2.14 | 2.23 | 2.13 | 2.17 | 2.17 | 0.46% | 303,938 |
| Jul 7, 2026 | 2.16 | 2.20 | 2.12 | 2.16 | 2.16 | -1.37% | 879,844 |
| Jul 6, 2026 | 2.17 | 2.21 | 2.15 | 2.19 | 2.19 | -0.45% | 372,735 |
| Jul 2, 2026 | 2.23 | 2.28 | 2.15 | 2.20 | 2.20 | -0.90% | 629,524 |
| Jul 1, 2026 | 2.21 | 2.27 | 2.21 | 2.22 | 2.22 | 0.45% | 397,551 |
| Jun 30, 2026 | 2.26 | 2.29 | 2.20 | 2.21 | 2.21 | -2.21% | 435,192 |
| Jun 29, 2026 | 2.26 | 2.33 | 2.25 | 2.26 | 2.26 | - | 518,253 |
| Jun 26, 2026 | 2.03 | 2.33 | 2.01 | 2.26 | 2.26 | 11.88% | 2,222,022 |
| Jun 25, 2026 | 2.12 | 2.13 | 2.02 | 2.02 | 2.02 | -3.81% | 1,146,404 |
| Jun 24, 2026 | 2.15 | 2.23 | 2.10 | 2.10 | 2.10 | -2.33% | 893,780 |
| Jun 23, 2026 | 2.16 | 2.23 | 2.15 | 2.15 | 2.15 | -2.71% | 609,657 |
| Jun 22, 2026 | 2.28 | 2.36 | 2.16 | 2.21 | 2.21 | -3.07% | 2,271,190 |
| Jun 18, 2026 | 2.51 | 2.51 | 2.15 | 2.28 | 2.28 | 8.06% | 7,195,319 |
| Jun 17, 2026 | 2.87 | 3.05 | 1.95 | 2.11 | 2.11 | -23.83% | 11,185,567 |
| Jun 16, 2026 | 2.94 | 2.98 | 2.75 | 2.77 | 2.77 | -4.81% | 1,432,159 |
| Jun 15, 2026 | 2.93 | 2.97 | 2.85 | 2.91 | 2.91 | 2.11% | 938,025 |
| Jun 12, 2026 | 2.72 | 2.85 | 2.70 | 2.85 | 2.85 | 5.56% | 623,936 |
| Jun 11, 2026 | 2.55 | 2.76 | 2.48 | 2.70 | 2.70 | 6.30% | 1,156,442 |