Amphastar Pharmaceuticals... (AMPH)
24.18
0.11 (0.46%)
At close: Apr 25, 2025, 3:59 PM
24.19
0.02%
After-hours: Apr 25, 2025, 04:05 PM EDT
Amphastar Pharmaceuticals Short Interest
Amphastar Pharmaceuticals has a total short interest of 3.42M. Its short interest has decreased by -11.17% to the previous Month.
Short Interest
3.42M
Short Prior Month
3.85M
% Change MoM
-11.17%
Short % Floating
10.94%
Short % Outstanding
7.12%
Days to Cover
5.69
Short Interest Chart
Short Interest History
| Date | Short Interest | Short Prior Month | % Change | Days to Cover | Short % Float | Short % Out |
|---|---|---|---|---|---|---|
| Apr 09, 2025 | 3.42M | 3.85M | -11.17% | 5.69 | 10.94% | 7.12% |
| Mar 25, 2025 | 3.85M | 4.13M | -6.67% | 6.05 | 12.32% | 8.01% |
| Mar 11, 2025 | 4.13M | 4.07M | 1.38% | 5.61 | 13.2% | 8.59% |
| Feb 26, 2025 | 4.07M | 4.12M | -1.16% | 10.14 | 13.02% | 8.47% |
| Feb 11, 2025 | 4.12M | 4.6M | -10.44% | 8.39 | 13.17% | 8.57% |
| Jan 27, 2025 | 4.6M | 4.82M | -4.47% | 7 | 14.71% | 9.57% |
| Jan 10, 2025 | 4.82M | 4.37M | 10.29% | 6.71 | 15.39% | 10.01% |
| Dec 24, 2024 | 4.37M | 4.12M | 5.86% | 9 | 13.96% | 9.08% |
| Dec 10, 2024 | 4.12M | 4.24M | -2.62% | 10.02 | 13.18% | 8.58% |
| Nov 26, 2024 | 4.24M | 4.34M | -2.45% | 8.89 | 13.54% | 8.81% |
| Nov 11, 2024 | 4.34M | 4.23M | 2.57% | 16.24 | 13.88% | 9.03% |
| Oct 24, 2024 | 4.23M | 4.35M | -2.74% | 15.49 | 13.19% | 8.66% |
| Oct 09, 2024 | 4.35M | 4.13M | 5.47% | 12.04 | 13.56% | 8.9% |
| Sep 24, 2024 | 4.13M | 4.21M | -1.95% | 11.14 | 12.85% | 8.44% |
| Sep 11, 2024 | 4.21M | 4.21M | -0.02% | 13.16 | 13.11% | 8.61% |
| Aug 26, 2024 | 4.21M | 4.55M | -7.4% | 9.61 | 13.11% | 8.61% |
| Aug 09, 2024 | 4.55M | 4.23M | 7.35% | 12.15 | 14.16% | 9.3% |
| Jul 24, 2024 | 4.23M | 4.17M | 1.61% | 9.3 | 13.19% | 8.66% |
| Jul 10, 2024 | 4.17M | 4.15M | 0.49% | 12.63 | 12.98% | 8.52% |
| Jun 26, 2024 | 4.15M | 3.76M | 10.15% | 10.94 | 12.92% | 8.48% |
| Jun 11, 2024 | 3.76M | 3.77M | -0.12% | 13.33 | 11.73% | 7.7% |
| May 24, 2024 | 3.77M | 3.99M | -5.45% | 9.48 | 11.74% | 7.71% |
| May 09, 2024 | 3.99M | 3.87M | 3.12% | 12.59 | 12.42% | 8.15% |
| Apr 24, 2024 | 3.87M | 3.67M | 5.21% | 11.36 | 12.06% | 7.91% |
| Apr 09, 2024 | 3.67M | 3.6M | 2.21% | 10.45 | 12.07% | 7.64% |
| Mar 26, 2024 | 3.6M | 3.72M | -3.35% | 6.28 | 11.81% | 7.48% |
| Mar 11, 2024 | 3.72M | 3.59M | 3.54% | 6.75 | 12.22% | 7.74% |
| Feb 27, 2024 | 3.59M | 3.19M | 12.47% | 9.77 | 11.88% | 7.5% |
| Feb 09, 2024 | 3.19M | 2.94M | 8.51% | 7.74 | 10.56% | 6.67% |
| Jan 24, 2024 | 2.94M | 2.78M | 5.85% | 4.3 | 9.73% | 6.15% |
| Jan 10, 2024 | 2.78M | 2.83M | -1.63% | 7.68 | 9.2% | 5.81% |
| Dec 27, 2023 | 2.83M | 2.85M | -0.76% | 5.26 | 9.35% | 5.9% |
| Dec 11, 2023 | 2.85M | 2.89M | -1.45% | 7.79 | 9.42% | 5.95% |
| Nov 27, 2023 | 2.89M | 2.5M | 15.51% | 5.58 | 9.56% | 6.03% |
| Nov 09, 2023 | 2.5M | 2.66M | -5.78% | 8.78 | 8.27% | 5.22% |
| Oct 24, 2023 | 2.66M | 2.62M | 1.42% | 7.69 | 8.52% | 5.44% |
| Oct 10, 2023 | 2.62M | 2.69M | -2.73% | 7.73 | 8.4% | 5.36% |
| Sep 26, 2023 | 2.69M | 1.3M | 106.97% | 2.85 | 8.63% | 5.51% |
| Sep 12, 2023 | 1.3M | 1.49M | -12.7% | 4.6 | 4.17% | 2.66% |
| Aug 24, 2023 | 1.49M | 1.43M | 4.2% | 3.29 | 4.78% | 3.05% |
| Aug 09, 2023 | 1.43M | 2.07M | -30.86% | 3.65 | 4.59% | 2.93% |
| Jul 25, 2023 | 2.07M | 2.01M | 2.79% | 5.68 | 6.76% | 4.29% |
| Jul 12, 2023 | 2.01M | 2.08M | -3.29% | 3.43 | 6.57% | 4.17% |
| Jun 27, 2023 | 2.08M | 1.88M | 10.79% | 4.22 | 6.8% | 4.31% |
| Jun 09, 2023 | 1.88M | 1.9M | -0.97% | 4.99 | 6.14% | 3.89% |
| May 24, 2023 | 1.9M | 1.86M | 1.74% | 4.62 | 6.2% | 3.93% |
| May 09, 2023 | 1.86M | 1.44M | 29.51% | 4.33 | 6.09% | 3.86% |
| Apr 25, 2023 | 1.44M | 1.31M | 9.6% | 3.54 | 4.71% | 2.99% |
| Apr 12, 2023 | 1.31M | 1.46M | -10.05% | 3.63 | 4.3% | 2.73% |
| Mar 24, 2023 | 1.46M | 1.75M | -16.7% | 3.67 | 4.88% | 3.05% |
| Mar 09, 2023 | 1.75M | 1.73M | 1.09% | 7.29 | 5.86% | 3.66% |
| Feb 27, 2023 | 1.73M | 1.72M | 1.09% | 8.84 | 5.8% | 3.62% |
| Feb 09, 2023 | 1.72M | 1.7M | 0.72% | 9.08 | 5.69% | 3.57% |
| Jan 25, 2023 | 1.7M | 1.72M | -1.04% | 8.11 | 5.65% | 3.54% |
| Jan 11, 2023 | 1.72M | 1.76M | -2.08% | 6.63 | 5.71% | 3.58% |
| Dec 27, 2022 | 1.76M | 1.77M | -0.83% | 9.02 | 5.79% | 3.64% |
| Dec 09, 2022 | 1.77M | 1.84M | -3.84% | 9.81 | 5.84% | 3.67% |
| Nov 25, 2022 | 1.84M | 1.94M | -4.79% | 7.55 | 6.07% | 3.81% |
| Nov 09, 2022 | 1.94M | 1.91M | 1.24% | 10.3 | 6.38% | 4% |
| Oct 25, 2022 | 1.91M | 1.89M | 1.18% | 8.33 | 6.24% | 3.93% |
| Oct 11, 2022 | 1.89M | 2.08M | -9.03% | 6.55 | 6.17% | 3.89% |
| Sep 26, 2022 | 2.08M | 2.19M | -5.13% | 6.8 | 6.69% | 4.24% |
| Sep 12, 2022 | 2.19M | 2.16M | 1.3% | 9.24 | 7.06% | 4.47% |
| Aug 24, 2022 | 2.16M | 2.29M | -5.5% | 4.73 | 6.97% | 4.41% |
| Aug 09, 2022 | 2.29M | 2.36M | -3.11% | 9.08 | 7.37% | 4.67% |
| Jul 26, 2022 | 2.36M | 2.3M | 2.66% | 6.79 | 7.61% | 4.82% |
| Jul 12, 2022 | 2.3M | 2.6M | -11.59% | 3.93 | 7.42% | 4.69% |
| Jun 27, 2022 | 2.6M | 2.34M | 11% | 2.55 | 8.43% | 5.33% |
| Jun 09, 2022 | 2.34M | 2.51M | -6.81% | 4.29 | 7.6% | 4.8% |
| May 24, 2022 | 2.51M | 2.35M | 7.11% | 4.91 | 8.15% | 5.15% |
| May 10, 2022 | 2.35M | 2.04M | 15.14% | 5.19 | 7.61% | 4.81% |
| Apr 26, 2022 | 2.04M | 1.95M | 4.65% | 3.65 | 6.61% | 4.18% |
| Apr 11, 2022 | 1.95M | 2.02M | -3.49% | 4.74 | 6.33% | 4% |
| Mar 24, 2022 | 2.02M | 1.99M | 1.68% | 3.59 | 5.15% | 4.19% |
| Mar 09, 2022 | 1.99M | 2.05M | -3.16% | 4.55 | 5.06% | 4.12% |
| Feb 25, 2022 | 2.05M | 1.94M | 5.86% | 5.57 | 5.28% | 4.3% |
| Feb 09, 2022 | 1.94M | 1.97M | -1.7% | 6.4 | 4.99% | 4.06% |
| Jan 26, 2022 | 1.97M | 2.01M | -1.77% | 7.52 | 5.08% | 4.13% |
| Jan 11, 2022 | 2.01M | 2.07M | -3.34% | 8.93 | 5.17% | 4.2% |
| Dec 27, 2021 | 2.07M | 2.12M | -1.97% | 10.43 | 5.33% | 4.34% |
| Dec 09, 2021 | 2.12M | 1.98M | 6.88% | 8.85 | 5.44% | 4.42% |
| Nov 24, 2021 | 1.98M | 2.31M | -14.31% | 8.83 | 5.09% | 4.14% |
| Nov 09, 2021 | 2.31M | 2.28M | 1.17% | 19.96 | 5.94% | 4.83% |
| Oct 26, 2021 | 2.28M | 2.28M | 0.05% | 19.14 | 5.85% | 4.76% |
| Oct 11, 2021 | 2.28M | 2.42M | -5.51% | 14.48 | 5.84% | 4.76% |
| Sep 24, 2021 | 2.42M | 2.4M | 0.66% | 15.16 | 6.18% | 5.03% |
| Sep 10, 2021 | 2.4M | 2.33M | 3.15% | 17.27 | 6.14% | 5% |
| Aug 24, 2021 | 2.33M | 2.39M | -2.5% | 12.13 | 5.95% | 4.84% |
| Aug 10, 2021 | 2.39M | 2.42M | -1.48% | 13.18 | 6.1% | 4.97% |
| Jul 26, 2021 | 2.42M | 2.44M | -0.63% | 14.5 | 6.2% | 5.05% |
| Jul 12, 2021 | 2.44M | 2.65M | -8.14% | 5.44 | 6.24% | 5.08% |
| Jun 24, 2021 | 2.65M | 2.6M | 1.95% | 11.83 | 6.85% | 5.57% |
| Jun 09, 2021 | 2.6M | 2.6M | 0.31% | 18.71 | 6.73% | 5.47% |
| May 25, 2021 | 2.6M | 2.63M | -1.18% | 14.75 | 6.7% | 5.45% |
| May 11, 2021 | 2.63M | 2.54M | 3.28% | 22.56 | 6.78% | 5.51% |
| Apr 26, 2021 | 2.54M | 2.47M | 2.83% | 19.36 | 6.56% | 5.33% |
| Apr 12, 2021 | 2.47M | 2.4M | 2.96% | 14.5 | 6.37% | 5.18% |
| Mar 24, 2021 | 2.4M | 2.57M | -6.35% | 7.96 | 7.95% | 5.06% |
| Mar 09, 2021 | 2.57M | 2.55M | 0.5% | 16.61 | 8.49% | 5.41% |
| Feb 24, 2021 | 2.55M | 2.6M | -1.69% | 19.12 | 8.43% | 5.37% |
| Feb 09, 2021 | 2.6M | 2.56M | 1.46% | 17.81 | 8.58% | 5.47% |
| Jan 27, 2021 | 2.56M | 2.67M | -4.3% | 13.05 | 8.45% | 5.39% |