Spero Therapeutics Inc. (SPRO)
NASDAQ: SPRO
· Real-Time Price · USD
0.66
0.00 (0.30%)
At close: May 01, 2025, 3:59 PM
0.66
-0.11%
Pre-market: May 02, 2025, 08:00 AM EDT
Spero Therapeutics Short Interest
Spero Therapeutics has a total short interest of 801.3K. Its short interest has increased by 60.88% to the previous Month.
Short Interest
801.3K
Short Prior Month
498.07K
% Change MoM
60.88%
Short % Floating
1.78%
Short % Outstanding
1.47%
Days to Cover
3.22
Short Interest Chart
Short Interest History
| Date | Short Interest | Short Prior Month | % Change | Day to Cover | Short % Float | Short % Out |
|---|---|---|---|---|---|---|
| Apr 25, 2025 | 801.3K | 498.07K | 60.88% | 3.22 | 1.78% | 1.47% |
| Apr 09, 2025 | 498.07K | 437.25K | 13.91% | 3.45 | 1.11% | 0.91% |
| Mar 25, 2025 | 437.25K | 424.74K | 2.95% | 4.6 | 0.97% | 0.8% |
| Mar 11, 2025 | 424.74K | 429.59K | -1.13% | 4.5 | 0.95% | 0.78% |
| Feb 26, 2025 | 429.59K | 376.79K | 14.01% | 1.29 | 0.96% | 0.79% |
| Feb 11, 2025 | 376.79K | 354.11K | 6.41% | 2 | 0.84% | 0.69% |
| Jan 27, 2025 | 354.11K | 412.64K | -14.19% | 1.57 | 0.79% | 0.65% |
| Jan 10, 2025 | 412.64K | 451.22K | -8.55% | 1.34 | 0.92% | 0.76% |
| Dec 24, 2024 | 451.22K | 493.83K | -8.63% | 2.81 | 1.01% | 0.83% |
| Dec 10, 2024 | 493.83K | 546.83K | -9.69% | 1.86 | 1.1% | 0.91% |
| Nov 26, 2024 | 546.83K | 625.19K | -12.53% | 1.71 | 1.22% | 1% |
| Nov 11, 2024 | 625.19K | 387.07K | 61.52% | 1.5 | 1.41% | 1.16% |
| Oct 24, 2024 | 387.07K | 384.3K | 0.72% | 2.22 | 0.87% | 0.72% |
| Oct 09, 2024 | 384.3K | 385.15K | -0.22% | 3.79 | 0.87% | 0.71% |
| Sep 24, 2024 | 385.15K | 409.11K | -5.86% | 3.48 | 0.87% | 0.71% |
| Sep 11, 2024 | 409.11K | 376.74K | 8.59% | 3.04 | 0.92% | 0.76% |
| Aug 09, 2024 | 355.91K | 390.34K | -8.82% | 4.87 | 0.8% | 0.66% |
| Jul 24, 2024 | 390.34K | 419.99K | -7.06% | 3.59 | 0.88% | 0.72% |
| Jul 10, 2024 | 419.99K | 434.15K | -3.26% | 3.19 | 0.95% | 0.78% |
| Jun 26, 2024 | 434.15K | 483.92K | -10.29% | 2 | 0.98% | 0.8% |
| Jun 11, 2024 | 483.92K | 494.2K | -2.08% | 3.28 | 1.09% | 0.9% |
| May 24, 2024 | 494.2K | 468.05K | 5.59% | 3.38 | 1.11% | 0.92% |
| May 09, 2024 | 468.05K | 513.16K | -8.79% | 2.46 | 1.06% | 0.87% |
| Apr 24, 2024 | 513.16K | 653.82K | -21.51% | 2.15 | 1.16% | 0.95% |
| Apr 09, 2024 | 653.82K | 613.85K | 6.51% | 2.09 | 1.47% | 1.21% |
| Mar 26, 2024 | 613.85K | 564K | 8.84% | 1 | 1.38% | 1.14% |
| Mar 11, 2024 | 564K | 619K | -8.89% | 2.18 | 1.27% | 1.05% |
| Feb 09, 2024 | 707.12K | 680.18K | 3.96% | 4.43 | 1.63% | 1.33% |
| Jan 24, 2024 | 680.18K | 789K | -13.79% | 3.36 | 1.57% | 1.28% |
| Jan 10, 2024 | 789K | 976.51K | -19.2% | 3.19 | 1.82% | 1.49% |
| Dec 27, 2023 | 976.51K | 1.08M | -9.51% | 7.15 | 2.26% | 1.84% |
| Dec 11, 2023 | 1.08M | 1.13M | -4.2% | 8.16 | 2.49% | 2.04% |
| Nov 27, 2023 | 1.13M | 1.26M | -10.36% | 6.17 | 2.6% | 2.13% |
| Nov 09, 2023 | 1.26M | 1.3M | -3.52% | 8.61 | 2.92% | 2.38% |
| Oct 24, 2023 | 1.3M | 1.35M | -3.75% | 7.96 | 3.03% | 2.47% |
| Oct 10, 2023 | 1.35M | 1.43M | -5.51% | 5.92 | 3.15% | 2.57% |
| Sep 26, 2023 | 1.43M | 1.14M | 25.17% | 5.77 | 3.33% | 2.72% |
| Sep 12, 2023 | 1.14M | 1.14M | 0.71% | 2.33 | 2.66% | 2.17% |
| Aug 24, 2023 | 1.14M | 1.17M | -3.28% | 3.39 | 2.63% | 2.16% |
| Aug 09, 2023 | 1.17M | 1.17M | 0.01% | 2.96 | 2.73% | 2.23% |
| Jul 25, 2023 | 1.17M | 1.23M | -4.14% | 6.23 | 2.73% | 2.23% |
| Jul 12, 2023 | 1.23M | 876.25K | 39.84% | 2.94 | 2.85% | 2.33% |
| Jun 27, 2023 | 876.25K | 881.82K | -0.63% | 3.9 | 2.04% | 1.67% |
| Jun 09, 2023 | 881.82K | 974.4K | -9.5% | 3.29 | 2.05% | 1.68% |
| May 24, 2023 | 974.4K | 1.45M | -32.74% | 2.67 | 2.26% | 1.85% |
| May 09, 2023 | 1.45M | 1.85M | -21.49% | 5.38 | 3.37% | 2.76% |
| Apr 25, 2023 | 1.85M | 1.58M | 16.77% | 3.1 | 4.29% | 3.51% |
| Apr 12, 2023 | 1.58M | 942.74K | 67.63% | 1.41 | 3.67% | 3.01% |
| Mar 24, 2023 | 942.74K | 389.5K | 142.04% | 1.45 | 2.19% | 1.79% |
| Mar 09, 2023 | 389.5K | 287.35K | 35.55% | 1 | 0.91% | 0.74% |
| Feb 27, 2023 | 287.35K | 468.23K | -38.63% | 1 | 0.61% | 0.55% |
| Feb 09, 2023 | 468.23K | 667.91K | -29.9% | 1.88 | 0.99% | 0.89% |
| Jan 25, 2023 | 667.91K | 849.37K | -21.36% | 1.56 | 1.42% | 1.27% |
| Jan 11, 2023 | 849.37K | 994.2K | -14.57% | 1.12 | 1.8% | 1.62% |
| Dec 27, 2022 | 994.2K | 1.3M | -23.34% | 2.2 | 2.14% | 1.92% |
| Dec 09, 2022 | 1.3M | 1.51M | -14.23% | 2.84 | 2.79% | 2.5% |
| Nov 25, 2022 | 1.51M | 1.23M | 23.37% | 1.38 | 3.25% | 2.92% |
| Nov 09, 2022 | 1.23M | 1.46M | -16.17% | 1.18 | 3.29% | 2.88% |
| Oct 25, 2022 | 1.46M | 2.16M | -32.4% | 1 | 3.89% | 3.41% |
| Oct 11, 2022 | 2.16M | 777.15K | 178.29% | 1 | 5.76% | 5.05% |
| Sep 26, 2022 | 777.15K | 275.55K | 182.04% | 1 | 2.34% | 2.02% |
| Sep 12, 2022 | 275.55K | 410.6K | -32.89% | 1.61 | 0.93% | 0.79% |
| Aug 24, 2022 | 410.6K | 406.07K | 1.11% | 1.45 | 1.38% | 1.17% |
| Aug 09, 2022 | 406.07K | 557.82K | -27.2% | 2.51 | 1.36% | 1.16% |
| Jul 26, 2022 | 557.82K | 413.57K | 34.88% | 2.83 | 1.87% | 1.59% |
| Jul 12, 2022 | 413.57K | 1.42M | -70.84% | 1 | 1.4% | 1.18% |
| Jun 27, 2022 | 1.42M | 1.56M | -8.89% | 4.66 | 5.2% | 4.32% |
| Jun 09, 2022 | 1.56M | 1.65M | -5.58% | 3.6 | 5.7% | 4.74% |
| May 24, 2022 | 1.65M | 3.69M | -55.33% | 1 | 6.04% | 5.02% |
| May 10, 2022 | 3.69M | 3.46M | 6.64% | 19.83 | 13.55% | 11.27% |
| Apr 26, 2022 | 3.46M | 3.25M | 6.65% | 10.11 | 12.71% | 10.57% |
| Apr 11, 2022 | 3.25M | 3.12M | 4.16% | 12.76 | 11.92% | 9.91% |
| Mar 24, 2022 | 3.12M | 2.96M | 5.41% | 23.68 | 12.05% | 9.62% |
| Mar 09, 2022 | 2.96M | 2.8M | 5.57% | 22.98 | 11.43% | 9.12% |
| Feb 25, 2022 | 2.8M | 2.5M | 11.99% | 15.67 | 10.83% | 8.64% |
| Feb 09, 2022 | 2.5M | 2.39M | 4.76% | 13.58 | 9.67% | 7.72% |
| Jan 26, 2022 | 2.39M | 2.29M | 4.29% | 16.45 | 9.23% | 7.37% |
| Jan 11, 2022 | 2.29M | 2.33M | -1.68% | 18.57 | 8.85% | 7.06% |
| Dec 27, 2021 | 2.33M | 2.35M | -1.07% | 23.53 | 9.03% | 7.2% |
| Dec 09, 2021 | 2.35M | 2.41M | -2.53% | 22.45 | 9.13% | 7.28% |
| Nov 24, 2021 | 2.41M | 2.5M | -3.45% | 29 | 9.36% | 7.47% |
| Nov 09, 2021 | 2.5M | 2.5M | 0.03% | 33.03 | 9.7% | 7.73% |
| Oct 26, 2021 | 2.5M | 2.53M | -1.34% | 27.16 | 9.73% | 7.76% |
| Oct 11, 2021 | 2.53M | 2.58M | -1.83% | 19.56 | 9.86% | 7.86% |
| Sep 24, 2021 | 2.58M | 2.69M | -4.13% | 22 | 10.08% | 8.03% |
| Sep 10, 2021 | 2.69M | 2.64M | 2.06% | 13.78 | 10.51% | 8.37% |
| Aug 24, 2021 | 2.64M | 2.64M | -0.02% | 31.9 | 10.3% | 8.2% |
| Aug 10, 2021 | 2.64M | 2.64M | -0.16% | 30.98 | 10.3% | 8.21% |
| Jul 26, 2021 | 2.64M | 2.4M | 9.92% | 9.25 | 11.41% | 8.9% |
| Jul 12, 2021 | 2.4M | 3.12M | -22.87% | 9.24 | 10.38% | 8.09% |
| Jun 24, 2021 | 3.12M | 3.15M | -1.14% | 30.32 | 13.46% | 10.49% |
| Jun 09, 2021 | 3.15M | 3.26M | -3.32% | 35.17 | 13.62% | 10.62% |
| May 25, 2021 | 3.26M | 3.33M | -2.09% | 28.49 | 14.07% | 10.99% |
| May 11, 2021 | 3.33M | 3.4M | -2.05% | 31.6 | 14.37% | 11.23% |
| Apr 26, 2021 | 3.4M | 3.38M | 0.68% | 27.89 | 14.67% | 11.46% |
| Apr 12, 2021 | 3.38M | 2.24M | 50.89% | 11.14 | 14.57% | 11.39% |
| Mar 24, 2021 | 2.24M | 2.2M | 1.57% | 14.98 | 9.72% | 7.59% |
| Mar 09, 2021 | 2.2M | 2.24M | -1.62% | 14.35 | 9.57% | 7.47% |
| Feb 24, 2021 | 2.24M | 2.25M | -0.6% | 4.6 | 8.39% | 7.66% |
| Feb 09, 2021 | 2.25M | 2.23M | 0.89% | 10.44 | 8.44% | 7.7% |
| Jan 27, 2021 | 2.23M | 2.25M | -0.69% | 7.28 | 8.37% | 7.63% |