Spero Therapeutics Inc.
SPRO | NASDAQ
$1.37
+$0.23 (+20.18%)
Sep 22, 2026, 12:13 PM ET · Market open
Market Cap History History
Annual Market Cap Change Annual Change
| Date | Market Cap | Change | % Change |
|---|---|---|---|
| Sep 20, 2026 | $66.08M | -$64.49M | -49.39% |
| Dec 25, 2025 | $130.57M | $74.82M | +134.21% |
| Dec 26, 2024 | $55.75M | -$21.74M | -28.05% |
| Dec 28, 2023 | $77.48M | $15.41M | +24.82% |
| Dec 29, 2022 | $62.08M | -$452.37M | -87.93% |
| Dec 30, 2021 | $514.44M | -$16.26M | -3.06% |
| Dec 30, 2020 | $530.7M | $336.28M | +172.96% |
| Dec 26, 2019 | $194.43M | $77.89M | +66.84% |
| Dec 27, 2018 | $116.53M | -$40.89M | -25.97% |
| Dec 28, 2017 | $157.42M | n/a | n/a |
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