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Ionis Pharmaceuticals Stock Short Interest Report | NASDAQ:IONS | Benzinga
Short interest in Ionis Pharmaceuticals Inc (NASDAQ:IONS) decreased during the last reporting period, falling from 13.70M to 12.66M. This put 10.32% of the company's publicly available shares short.
Based on the recent average volume of 1.91M shares traded per day, it would take 6.61 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.
Short Interest
12.66M
Short Interest %
10.3%
Days to Cover
6.61
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|---|---|---|---|---|---|---|---|---|---|
IONS | Ionis Pharmaceuticals, Inc. Co | 10/31/2025 | 11/11/2025 | 10.32% | 122,710,999 | 12,661,274 | 1,914,799 | 6.61 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 10/15/2025 | 10/24/2025 | 11.40% | 120,127,835 | 13,699,358 | 2,279,250 | 6.01 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 09/30/2025 | 10/09/2025 | 10.22% | 120,127,835 | 12,278,792 | 1,991,945 | 6.16 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 09/15/2025 | 09/24/2025 | 9.97% | 120,127,835 | 11,972,594 | 4,802,271 | 2.49 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 08/29/2025 | 09/10/2025 | 8.74% | 120,127,835 | 10,502,338 | 1,766,631 | 5.94 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 08/15/2025 | 08/26/2025 | 8.98% | 120,127,835 | 10,785,168 | 2,150,609 | 5.01 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 07/31/2025 | 08/11/2025 | 9.64% | 120,127,835 | 11,580,340 | 1,778,123 | 6.51 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 07/15/2025 | 07/24/2025 | 9.45% | 136,328,661 | 12,889,193 | 2,201,808 | 5.85 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 06/30/2025 | 07/10/2025 | 10.37% | 136,328,661 | 14,139,627 | 1,956,419 | 7.23 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 06/13/2025 | 06/25/2025 | 10.43% | 136,328,661 | 14,225,565 | 1,430,495 | 9.94 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 05/30/2025 | 06/10/2025 | 10.88% | 136,328,661 | 14,836,205 | 1,410,037 | 10.52 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 05/15/2025 | 05/27/2025 | 11.20% | 136,328,661 | 15,266,156 | 1,630,549 | 9.36 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 04/30/2025 | 05/09/2025 | 10.73% | 136,328,661 | 14,629,509 | 1,411,113 | 10.37 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 04/15/2025 | 04/25/2025 | 10.67% | 136,328,661 | 14,547,282 | 2,356,410 | 6.17 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 03/31/2025 | 04/09/2025 | 9.78% | 136,328,661 | 13,336,000 | 1,395,099 | 9.56 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 03/14/2025 | 03/25/2025 | 9.40% | 136,328,661 | 12,814,848 | 1,708,250 | 7.5 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 02/28/2025 | 03/11/2025 | 9.43% | 136,328,661 | 12,853,622 | 2,018,209 | 6.37 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 02/14/2025 | 02/26/2025 | 9.30% | 136,328,661 | 12,673,485 | 1,340,248 | 9.46 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 01/31/2025 | 02/11/2025 | 8.96% | 135,261,176 | 12,124,536 | 1,831,301 | 6.62 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 01/15/2025 | 01/27/2025 | 7.57% | 135,261,176 | 10,239,965 | 1,408,358 | 7.27 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 12/31/2024 | 01/10/2025 | 8.06% | 135,261,176 | 10,901,561 | 1,682,606 | 6.48 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 12/13/2024 | 12/24/2024 | 7.78% | 135,261,176 | 10,528,956 | 1,379,548 | 7.63 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 11/29/2024 | 12/10/2024 | 7.72% | 135,261,176 | 10,448,423 | 1,633,097 | 6.4 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 11/15/2024 | 11/26/2024 | 8.17% | 135,261,176 | 11,050,361 | 1,195,779 | 9.24 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 10/31/2024 | 11/11/2024 | 7.94% | 135,261,176 | 10,740,418 | 1,210,170 | 8.88 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 10/15/2024 | 10/24/2024 | 7.31% | 135,074,980 | 9,869,851 | 1,420,544 | 6.95 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 09/30/2024 | 10/09/2024 | 7.80% | 135,074,980 | 10,533,799 | 1,814,522 | 5.81 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 09/13/2024 | 09/24/2024 | 7.86% | 135,074,980 | 10,614,257 | 3,008,213 | 3.53 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 08/30/2024 | 09/11/2024 | 8.22% | 123,574,980 | 10,159,853 | 911,068 | 11.15 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 08/15/2024 | 08/26/2024 | 8.01% | 123,574,980 | 9,902,786 | 1,131,816 | 8.75 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 07/31/2024 | 08/09/2024 | 7.66% | 123,574,980 | 9,461,204 | 1,310,348 | 7.22 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 07/15/2024 | 07/24/2024 | 7.59% | 123,329,263 | 9,365,346 | 1,294,930 | 7.23 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 06/28/2024 | 07/10/2024 | 7.72% | 123,329,263 | 9,520,997 | 2,063,118 | 4.61 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 06/14/2024 | 06/26/2024 | 7.02% | 123,329,263 | 8,653,199 | 935,006 | 9.25 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 05/31/2024 | 06/11/2024 | 6.97% | 123,329,263 | 8,597,493 | 1,356,240 | 6.34 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 05/15/2024 | 05/24/2024 | 6.99% | 123,329,263 | 8,625,854 | 1,102,677 | 7.82 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 04/30/2024 | 05/09/2024 | 7.10% | 123,329,263 | 8,753,675 | 846,483 | 10.34 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 04/15/2024 | 04/24/2024 | 7.74% | 123,209,741 | 9,534,366 | 883,254 | 10.79 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 03/28/2024 | 04/09/2024 | 7.71% | 123,472,803 | 9,522,759 | 952,663 | 10 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 03/15/2024 | 03/26/2024 | 7.83% | 123,472,803 | 9,665,680 | 1,078,789 | 8.96 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 02/29/2024 | 03/11/2024 | 7.38% | 123,472,803 | 9,106,796 | 1,643,039 | 5.54 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 02/15/2024 | 02/27/2024 | 7.34% | 123,472,803 | 9,064,713 | 1,025,039 | 8.84 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 01/31/2024 | 02/09/2024 | 6.97% | 121,193,125 | 8,451,609 | 1,304,996 | 6.48 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 01/12/2024 | 01/24/2024 | 7.05% | 121,193,125 | 8,543,328 | 1,195,918 | 7.14 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 12/29/2023 | 01/10/2024 | 6.80% | 121,193,125 | 8,242,800 | 1,091,677 | 7.55 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 12/15/2023 | 12/27/2023 | 7.07% | 121,193,125 | 8,563,127 | 1,247,402 | 6.86 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 11/30/2023 | 12/11/2023 | 8.01% | 121,193,125 | 9,704,674 | 795,974 | 12.19 | |
IONS | Ionis Pharmaceuticals, Inc. Co | 11/15/2023 | 11/27/2023 | 8.04% | 121,193,125 | 9,740,886 | 1,237,102 | 7.87 |
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