Ionis Pharmaceuticals Inc... (IONS)
29.55
0.45 (1.55%)
At close: Apr 24, 2025, 3:59 PM
29.47
-0.26%
After-hours: Apr 24, 2025, 04:32 PM EDT
Ionis Pharmaceuticals Short Interest
Ionis Pharmaceuticals has a total short interest of 13.34M. Its short interest has increased by 4.07% to the previous Month.
Short Interest
13.34M
Short Prior Month
12.81M
% Change MoM
4.07%
Short % Floating
9.78%
Short % Outstanding
8.39%
Days to Cover
9.56
Short Interest Chart
Short Interest History
| Date | Short Interest | Short Prior Month | % Change | Days to Cover | Short % Float | Short % Out |
|---|---|---|---|---|---|---|
| Apr 09, 2025 | 13.34M | 12.81M | 4.07% | 9.56 | 9.78% | 8.39% |
| Mar 25, 2025 | 12.81M | 12.85M | -0.3% | 7.5 | 9.4% | 8.06% |
| Mar 11, 2025 | 12.85M | 12.67M | 1.42% | 6.37 | 9.43% | 8.09% |
| Feb 26, 2025 | 12.67M | 12.12M | 4.53% | 9.46 | 9.3% | 7.97% |
| Feb 11, 2025 | 12.12M | 10.24M | 18.4% | 6.62 | 8.96% | 7.68% |
| Jan 27, 2025 | 10.24M | 10.9M | -6.07% | 7.27 | 7.57% | 6.49% |
| Jan 10, 2025 | 10.9M | 10.53M | 3.54% | 6.48 | 8.06% | 6.9% |
| Dec 24, 2024 | 10.53M | 10.45M | 0.77% | 7.63 | 7.78% | 6.67% |
| Dec 10, 2024 | 10.45M | 11.05M | -5.45% | 6.4 | 7.72% | 6.62% |
| Nov 26, 2024 | 11.05M | 10.74M | 2.89% | 9.24 | 8.17% | 7% |
| Nov 11, 2024 | 10.74M | 9.87M | 8.82% | 8.88 | 7.94% | 6.8% |
| Oct 24, 2024 | 9.87M | 10.53M | -6.3% | 6.95 | 7.31% | 6.26% |
| Oct 09, 2024 | 10.53M | 10.61M | -0.76% | 5.81 | 7.8% | 6.68% |
| Sep 24, 2024 | 10.61M | 10.16M | 4.47% | 3.53 | 7.86% | 6.73% |
| Sep 11, 2024 | 10.16M | 9.9M | 2.6% | 11.15 | 8.22% | 6.95% |
| Aug 26, 2024 | 9.9M | 9.46M | 4.67% | 8.75 | 8.01% | 6.77% |
| Aug 09, 2024 | 9.46M | 9.37M | 1.02% | 7.22 | 7.66% | 6.47% |
| Jul 24, 2024 | 9.37M | 9.52M | -1.63% | 7.23 | 7.59% | 6.42% |
| Jul 10, 2024 | 9.52M | 8.65M | 10.03% | 4.61 | 7.72% | 6.52% |
| Jun 26, 2024 | 8.65M | 8.6M | 0.65% | 9.25 | 7.02% | 5.93% |
| Jun 11, 2024 | 8.6M | 8.63M | -0.33% | 6.34 | 6.97% | 5.89% |
| May 24, 2024 | 8.63M | 8.75M | -1.46% | 7.82 | 6.99% | 5.91% |
| May 09, 2024 | 8.75M | 9.53M | -8.19% | 10.34 | 7.1% | 6% |
| Apr 24, 2024 | 9.53M | 9.52M | 0.12% | 10.79 | 7.74% | 6.54% |
| Apr 09, 2024 | 9.52M | 9.67M | -1.48% | 10 | 7.71% | 6.53% |
| Mar 26, 2024 | 9.67M | 9.11M | 6.14% | 8.96 | 7.83% | 6.63% |
| Mar 11, 2024 | 9.11M | 9.06M | 0.46% | 5.54 | 7.38% | 6.25% |
| Feb 27, 2024 | 9.06M | 8.45M | 7.25% | 8.84 | 7.34% | 6.22% |
| Feb 09, 2024 | 8.45M | 8.54M | -1.07% | 6.48 | 6.97% | 5.89% |
| Jan 24, 2024 | 8.54M | 8.24M | 3.65% | 7.14 | 7.05% | 5.95% |
| Jan 10, 2024 | 8.24M | 8.56M | -3.74% | 7.55 | 6.8% | 5.75% |
| Dec 27, 2023 | 8.56M | 9.7M | -11.76% | 6.86 | 7.07% | 5.97% |
| Dec 11, 2023 | 9.7M | 9.74M | -0.37% | 12.19 | 8.01% | 6.76% |
| Nov 27, 2023 | 9.74M | 9.7M | 0.37% | 7.87 | 8.04% | 6.79% |
| Nov 09, 2023 | 9.7M | 9.13M | 6.33% | 9.48 | 8.01% | 6.76% |
| Oct 24, 2023 | 9.13M | 9.3M | -1.88% | 7.78 | 7.54% | 6.37% |
| Oct 10, 2023 | 9.3M | 9.38M | -0.8% | 7.26 | 7.68% | 6.49% |
| Sep 26, 2023 | 9.38M | 9.29M | 0.95% | 9.86 | 7.75% | 6.54% |
| Sep 12, 2023 | 9.29M | 9.65M | -3.71% | 14.84 | 7.67% | 6.48% |
| Aug 24, 2023 | 9.65M | 9.21M | 4.7% | 12.55 | 7.97% | 6.73% |
| Aug 09, 2023 | 9.21M | 8.86M | 3.95% | 6.88 | 7.63% | 6.44% |
| Jul 25, 2023 | 8.86M | 8.62M | 2.79% | 10.46 | 7.34% | 6.19% |
| Jul 12, 2023 | 8.62M | 8.69M | -0.82% | 7.26 | 7.14% | 6.03% |
| Jun 27, 2023 | 8.69M | 6.52M | 33.29% | 4.27 | 7.2% | 6.08% |
| Jun 09, 2023 | 6.52M | 7.11M | -8.25% | 4.63 | 5.4% | 4.56% |
| May 24, 2023 | 7.11M | 7.02M | 1.28% | 8.24 | 5.88% | 4.97% |
| May 09, 2023 | 7.02M | 6.92M | 1.51% | 7.83 | 5.81% | 4.91% |
| Apr 25, 2023 | 6.92M | 7.39M | -6.37% | 7.93 | 5.73% | 4.84% |
| Apr 12, 2023 | 7.39M | 7.66M | -3.62% | 6.95 | 6.12% | 5.16% |
| Mar 24, 2023 | 7.66M | 8.17M | -6.15% | 10.17 | 6.34% | 5.36% |
| Mar 09, 2023 | 8.17M | 7.51M | 8.77% | 7.99 | 6.75% | 5.71% |
| Feb 27, 2023 | 7.51M | 8.18M | -8.2% | 11.22 | 6.21% | 5.25% |
| Feb 09, 2023 | 8.18M | 8.14M | 0.5% | 8.8 | 6.81% | 5.76% |
| Jan 25, 2023 | 8.14M | 8.68M | -6.3% | 5.86 | 6.78% | 5.73% |
| Jan 11, 2023 | 8.68M | 7.29M | 19.16% | 7.77 | 7.24% | 6.11% |
| Dec 27, 2022 | 7.29M | 7.99M | -8.73% | 6.77 | 6.07% | 5.13% |
| Dec 09, 2022 | 7.99M | 7.72M | 3.49% | 8.46 | 6.65% | 5.62% |
| Nov 25, 2022 | 7.72M | 6.86M | 12.57% | 7.34 | 6.43% | 5.43% |
| Nov 09, 2022 | 6.86M | 7M | -2.08% | 6.6 | 5.71% | 4.83% |
| Oct 25, 2022 | 7M | 7.25M | -3.45% | 7.89 | 5.84% | 4.93% |
| Oct 11, 2022 | 7.25M | 6.8M | 6.69% | 5.77 | 6.04% | 5.11% |
| Sep 26, 2022 | 6.8M | 6.23M | 9.12% | 6.01 | 5.67% | 4.79% |
| Sep 12, 2022 | 6.23M | 6.75M | -7.78% | 9.27 | 5.19% | 4.39% |
| Aug 24, 2022 | 6.75M | 6.1M | 10.68% | 5.73 | 5.63% | 4.76% |
| Aug 09, 2022 | 6.1M | 6.07M | 0.57% | 9.36 | 5.09% | 4.3% |
| Jul 26, 2022 | 6.07M | 5.73M | 5.97% | 6.29 | 5.07% | 4.28% |
| Jul 12, 2022 | 5.73M | 5.65M | 1.34% | 5.88 | 4.78% | 4.04% |
| Jun 27, 2022 | 5.65M | 5.99M | -5.65% | 6.48 | 4.72% | 3.98% |
| Jun 09, 2022 | 5.99M | 7.14M | -16.08% | 5.06 | 5% | 4.22% |
| May 24, 2022 | 7.14M | 6.54M | 9.06% | 6.05 | 5.96% | 5.03% |
| May 10, 2022 | 6.54M | 7.45M | -12.13% | 5.43 | 5.46% | 4.61% |
| Apr 26, 2022 | 7.45M | 7.17M | 3.87% | 6.12 | 6.22% | 5.25% |
| Apr 11, 2022 | 7.17M | 7.29M | -1.73% | 7.61 | 5.99% | 5.06% |
| Mar 24, 2022 | 7.29M | 7.6M | -4.06% | 8.5 | 6.1% | 5.15% |
| Mar 09, 2022 | 7.6M | 9.35M | -18.7% | 6.82 | 6.36% | 5.37% |
| Feb 25, 2022 | 9.35M | 9.52M | -1.75% | 7.94 | 7.82% | 6.6% |
| Feb 09, 2022 | 9.52M | 7.22M | 31.81% | 5.64 | 7.99% | 6.74% |
| Jan 26, 2022 | 7.22M | 7.33M | -1.44% | 6.92 | 6.06% | 5.11% |
| Jan 11, 2022 | 7.33M | 7.39M | -0.83% | 7.57 | 6.15% | 5.19% |
| Dec 27, 2021 | 7.39M | 6.83M | 8.21% | 4.44 | 6.2% | 5.23% |
| Dec 09, 2021 | 6.83M | 6.19M | 10.31% | 5.61 | 5.73% | 4.84% |
| Nov 24, 2021 | 6.19M | 6.91M | -10.39% | 8.23 | 5.19% | 4.38% |
| Nov 09, 2021 | 6.91M | 6.78M | 1.85% | 4.92 | 5.8% | 4.89% |
| Oct 26, 2021 | 6.78M | 6.64M | 2.07% | 9.23 | 5.69% | 4.8% |
| Oct 11, 2021 | 6.64M | 7.17M | -7.36% | 6.45 | 5.58% | 4.71% |
| Sep 24, 2021 | 7.17M | 7.69M | -6.71% | 7.75 | 6.02% | 5.08% |
| Sep 10, 2021 | 7.69M | 8.4M | -8.5% | 10.77 | 6.45% | 5.45% |
| Aug 24, 2021 | 8.4M | 9.19M | -8.61% | 12.31 | 7.05% | 5.95% |
| Aug 10, 2021 | 9.19M | 8.57M | 7.26% | 8.67 | 7.72% | 6.51% |
| Jul 26, 2021 | 8.57M | 9M | -4.79% | 8.41 | 7.2% | 6.08% |
| Jul 12, 2021 | 9M | 8.97M | 0.4% | 5.96 | 7.57% | 6.38% |
| Jun 24, 2021 | 8.97M | 10.84M | -17.31% | 5.24 | 7.54% | 6.36% |
| Jun 09, 2021 | 10.85M | 10.74M | 1.05% | 4.76 | 9.12% | 7.7% |
| May 25, 2021 | 10.74M | 10.31M | 4.16% | 4.95 | 9.03% | 7.62% |
| May 11, 2021 | 10.31M | 9.66M | 6.68% | 8.67 | 8.67% | 7.31% |
| Apr 26, 2021 | 9.66M | 8.77M | 10.22% | 5.97 | 8.13% | 6.86% |
| Apr 12, 2021 | 8.77M | 8.58M | 2.11% | 4.4 | 7.37% | 6.22% |
| Mar 24, 2021 | 8.58M | 8.5M | 1% | 10.79 | 7.22% | 6.09% |
| Mar 09, 2021 | 8.5M | 7.94M | 7.06% | 11.15 | 7.15% | 6.03% |
| Feb 24, 2021 | 7.94M | 7.55M | 5.14% | 10.42 | 6.69% | 5.64% |
| Feb 09, 2021 | 7.55M | 7.36M | 2.58% | 9.67 | 6.39% | 5.38% |
| Jan 27, 2021 | 7.36M | 7.78M | -5.34% | 8.65 | 6.23% | 5.24% |