Spero Therapeutics, Inc. (SPRO) NASDAQ
Currency In USD
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Currency In USD
If you invested $1000 in Spero Therapeutics, Inc. (SPRO) since IPO date, it would be worth $98.26 as of October 23, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $68.82, while $1000 invested 1 year ago would be worth $513.64. This corresponds to total returns of -90.17%, -93.12%, -48.64%, respectively, with annualized returns of -22.77%, -41.47%, -48.64%.
Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.
Date Range:
| Date | Open | Close | Adj Close | High | Low | Volume |
|---|---|---|---|---|---|---|
| October 22, 2026 | 1.16 | 1.13 | 1.13 | 1.17 | 1.13 | 201,699 |
| October 21, 2026 | 1.21 | 1.17 | 1.17 | 1.22 | 1.17 | 265,711 |
| October 20, 2026 | 1.14 | 1.22 | 1.22 | 1.24 | 1.11 | 668,048 |
| October 19, 2026 | 1.09 | 1.12 | 1.12 | 1.13 | 1.09 | 203,028 |
| October 16, 2026 | 1.14 | 1.1 | 1.1 | 1.17 | 1.09 | 361,277 |
| October 15, 2026 | 1.12 | 1.13 | 1.13 | 1.14 | 1.11 | 233,828 |
| October 14, 2026 | 1.15 | 1.12 | 1.12 | 1.17 | 1.11 | 695,673 |
| October 13, 2026 | 1.19 | 1.15 | 1.15 | 1.2 | 1.15 | 272,491 |
| October 12, 2026 | 1.2 | 1.18 | 1.18 | 1.22 | 1.17 | 414,066 |
| October 09, 2026 | 1.14 | 1.2 | 1.2 | 1.21 | 1.14 | 437,644 |
| October 08, 2026 | 1.2 | 1.14 | 1.14 | 1.22 | 1.13 | 718,885 |
| October 07, 2026 | 1.19 | 1.17 | 1.17 | 1.19 | 1.16 | 233,549 |
| October 06, 2026 | 1.21 | 1.19 | 1.19 | 1.24 | 1.18 | 346,891 |
| October 05, 2026 | 1.17 | 1.16 | 1.16 | 1.2 | 1.15 | 935,691 |
| October 02, 2026 | 1.26 | 1.19 | 1.19 | 1.27 | 1.17 | 906,914 |
| October 01, 2026 | 1.22 | 1.26 | 1.26 | 1.31 | 1.2 | 1.04M |
| September 30, 2026 | 1.21 | 1.21 | 1.21 | 1.29 | 1.2 | 557,911 |
| September 29, 2026 | 1.2 | 1.2 | 1.2 | 1.22 | 1.17 | 334,905 |
| September 28, 2026 | 1.22 | 1.19 | 1.19 | 1.22 | 1.18 | 393,053 |
| September 25, 2026 | 1.27 | 1.23 | 1.23 | 1.29 | 1.21 | 537,768 |
| September 24, 2026 | 1.25 | 1.25 | 1.25 | 1.29 | 1.24 | 473,727 |
| September 23, 2026 | 1.36 | 1.26 | 1.26 | 1.4 | 1.24 | 1.4M |
| September 22, 2026 | 1.3 | 1.36 | 1.36 | 1.44 | 1.28 | 7.76M |
| September 21, 2026 | 1.14 | 1.14 | 1.14 | 1.15 | 1.13 | 319,093 |
| September 18, 2026 | 1.12 | 1.13 | 1.13 | 1.21 | 1.12 | 501,369 |
| September 17, 2026 | 1.14 | 1.12 | 1.12 | 1.14 | 1.11 | 180,136 |
| September 16, 2026 | 1.12 | 1.11 | 1.11 | 1.14 | 1.1 | 439,641 |
| September 15, 2026 | 1.14 | 1.13 | 1.13 | 1.15 | 1.11 | 224,282 |
| September 11, 2026 | 1.14 | 1.13 | 1.13 | 1.15 | 1.13 | 308,629 |
| September 10, 2026 | 1.18 | 1.12 | 1.12 | 1.18 | 1.12 | 569,283 |
| September 09, 2026 | 1.2 | 1.17 | 1.17 | 1.21 | 1.17 | 367,029 |
| September 08, 2026 | 1.21 | 1.19 | 1.19 | 1.22 | 1.19 | 348,124 |
| September 04, 2026 | 1.2 | 1.21 | 1.21 | 1.22 | 1.19 | 362,871 |
| September 03, 2026 | 1.22 | 1.22 | 1.22 | 1.23 | 1.22 | 0 |
| September 02, 2026 | 1.2 | 1.22 | 1.22 | 1.24 | 1.2 | 169,512 |
| September 01, 2026 | 1.22 | 1.2 | 1.2 | 1.22 | 1.18 | 382,297 |
| August 31, 2026 | 1.2 | 1.22 | 1.22 | 1.23 | 1.2 | 330,164 |
| August 28, 2026 | 1.21 | 1.2 | 1.2 | 1.22 | 1.18 | 312,272 |
| August 27, 2026 | 1.22 | 1.21 | 1.21 | 1.23 | 1.18 | 537,656 |
| August 26, 2026 | 1.22 | 1.22 | 1.22 | 1.23 | 1.2 | 154,663 |
| August 25, 2026 | 1.23 | 1.23 | 1.23 | 1.26 | 1.2 | 645,513 |
| August 24, 2026 | 1.22 | 1.22 | 1.22 | 1.24 | 1.2 | 367,271 |
| August 21, 2026 | 1.22 | 1.22 | 1.22 | 1.25 | 1.21 | 359,138 |
| August 20, 2026 | 1.22 | 1.21 | 1.21 | 1.27 | 1.2 | 557,879 |
| August 19, 2026 | 1.23 | 1.23 | 1.23 | 1.24 | 1.19 | 0 |
| August 18, 2026 | 1.2 | 1.2 | 1.2 | 1.2 | 1.18 | 0 |
| August 17, 2026 | 1.21 | 1.19 | 1.19 | 1.24 | 1.19 | 299,010 |
| August 14, 2026 | 1.26 | 1.23 | 1.23 | 1.26 | 1.19 | 744,543 |
| August 13, 2026 | 1.19 | 1.24 | 1.24 | 1.3 | 1.19 | 0 |
| August 12, 2026 | 1.19 | 1.19 | 1.19 | 1.19 | 1.19 | 0 |
| August 11, 2026 | 1.24 | 1.23 | 1.23 | 1.24 | 1.21 | 0 |
| August 10, 2026 | 1.25 | 1.23 | 1.23 | 1.28 | 1.23 | 350,798 |
| August 07, 2026 | 1.27 | 1.26 | 1.26 | 1.28 | 1.24 | 0 |
| August 06, 2026 | 1.26 | 1.27 | 1.27 | 1.27 | 1.23 | 972,468 |
| August 05, 2026 | 1.25 | 1.26 | 1.26 | 1.28 | 1.21 | 574,336 |
| August 04, 2026 | 1.15 | 1.23 | 1.23 | 1.25 | 1.15 | 751,966 |
| August 03, 2026 | 1.19 | 1.15 | 1.15 | 1.22 | 1.13 | 1.37M |
| July 31, 2026 | 1.2 | 1.17 | 1.17 | 1.21 | 1.17 | 811,649 |
| July 30, 2026 | 1.2 | 1.2 | 1.2 | 1.22 | 1.18 | 486,387 |
| July 29, 2026 | 1.2 | 1.19 | 1.19 | 1.21 | 1.16 | 1.06M |