Ionis Pharmaceuticals, Inc. (IONS)
NASDAQ: IONS · Real-Time Price · USD
69.97
-0.30 (-0.43%)
At close: Oct 10, 2025, 4:00 PM EDT
70.42
+0.45 (0.64%)
After-hours: Oct 10, 2025, 7:59 PM EDT
Ionis Pharmaceuticals Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 10, 2025 | 70.00 | 70.49 | 69.40 | 69.97 | 69.97 | -0.43% | 1,692,852 |
| Oct 9, 2025 | 70.21 | 70.89 | 69.68 | 70.27 | 70.27 | 0.44% | 1,959,024 |
| Oct 8, 2025 | 70.49 | 71.87 | 69.60 | 69.96 | 69.96 | 1.48% | 3,102,776 |
| Oct 7, 2025 | 69.00 | 69.77 | 67.95 | 68.94 | 68.94 | -0.12% | 1,903,691 |
| Oct 6, 2025 | 69.15 | 70.14 | 68.85 | 69.02 | 69.02 | -0.19% | 1,824,037 |
| Oct 3, 2025 | 68.33 | 69.25 | 67.64 | 69.15 | 69.15 | 1.10% | 2,579,755 |
| Oct 2, 2025 | 66.21 | 68.41 | 65.97 | 68.40 | 68.40 | 3.95% | 2,999,333 |
| Oct 1, 2025 | 65.35 | 66.25 | 64.93 | 65.80 | 65.80 | 0.58% | 2,222,143 |
| Sep 30, 2025 | 63.90 | 65.55 | 63.66 | 65.42 | 65.42 | 1.98% | 2,140,270 |
| Sep 29, 2025 | 63.76 | 64.70 | 63.36 | 64.15 | 64.15 | 0.09% | 1,454,533 |
| Sep 26, 2025 | 64.03 | 64.49 | 63.05 | 64.09 | 64.09 | 1.78% | 1,522,295 |
| Sep 25, 2025 | 63.47 | 64.07 | 62.72 | 62.97 | 62.97 | -1.52% | 2,314,520 |
| Sep 24, 2025 | 62.65 | 63.99 | 62.19 | 63.94 | 63.94 | 2.19% | 1,592,919 |
| Sep 23, 2025 | 61.51 | 63.13 | 61.03 | 62.57 | 62.57 | 1.97% | 2,066,238 |
| Sep 22, 2025 | 63.18 | 63.18 | 61.05 | 61.36 | 61.36 | 0.57% | 2,682,881 |
| Sep 19, 2025 | 61.91 | 62.00 | 60.41 | 61.01 | 61.01 | -1.18% | 3,305,122 |
| Sep 18, 2025 | 62.15 | 62.52 | 61.21 | 61.74 | 61.74 | 0.93% | 1,644,660 |
| Sep 17, 2025 | 61.44 | 62.10 | 60.86 | 61.17 | 61.17 | -0.24% | 1,636,439 |
| Sep 16, 2025 | 61.03 | 61.54 | 60.67 | 61.32 | 61.32 | 0.35% | 1,787,612 |
| Sep 15, 2025 | 62.94 | 63.42 | 60.64 | 61.10 | 61.10 | -3.26% | 2,151,273 |
| Sep 12, 2025 | 63.85 | 64.61 | 63.07 | 63.16 | 63.16 | -1.37% | 1,471,497 |
| Sep 11, 2025 | 63.65 | 64.21 | 62.79 | 64.04 | 64.04 | 0.06% | 1,816,829 |
| Sep 10, 2025 | 64.30 | 64.72 | 62.84 | 64.00 | 64.00 | -0.62% | 2,258,156 |
| Sep 9, 2025 | 61.15 | 64.71 | 60.99 | 64.40 | 64.40 | 5.57% | 4,303,839 |
| Sep 8, 2025 | 61.20 | 61.26 | 59.36 | 61.00 | 61.00 | -0.38% | 2,774,558 |
| Sep 5, 2025 | 59.43 | 62.01 | 59.22 | 61.23 | 61.23 | 3.17% | 3,197,740 |
| Sep 4, 2025 | 59.34 | 60.75 | 58.85 | 59.35 | 59.35 | -1.88% | 3,906,664 |
| Sep 3, 2025 | 58.98 | 62.08 | 58.56 | 60.49 | 60.49 | 5.22% | 10,336,004 |
| Sep 2, 2025 | 49.14 | 57.92 | 49.13 | 57.49 | 57.49 | 34.84% | 16,461,729 |
| Aug 29, 2025 | 42.50 | 42.75 | 42.13 | 42.64 | 42.64 | 0.04% | 1,152,750 |
| Aug 28, 2025 | 42.75 | 43.35 | 42.60 | 42.62 | 42.62 | -0.30% | 1,097,745 |
| Aug 27, 2025 | 42.17 | 43.09 | 41.95 | 42.75 | 42.75 | 1.38% | 1,949,911 |
| Aug 26, 2025 | 41.71 | 42.57 | 41.71 | 42.17 | 42.17 | 0.84% | 2,596,462 |
| Aug 25, 2025 | 42.82 | 43.06 | 41.79 | 41.82 | 41.82 | -2.04% | 1,571,973 |
| Aug 22, 2025 | 43.68 | 43.72 | 42.09 | 42.69 | 42.69 | -1.26% | 1,859,935 |
| Aug 21, 2025 | 42.60 | 44.99 | 42.47 | 43.24 | 43.24 | 0.99% | 1,876,589 |
| Aug 20, 2025 | 42.45 | 43.26 | 41.96 | 42.81 | 42.81 | 0.78% | 2,285,988 |
| Aug 19, 2025 | 43.49 | 43.90 | 42.27 | 42.48 | 42.48 | -2.19% | 2,003,784 |
| Aug 18, 2025 | 43.99 | 44.29 | 43.41 | 43.43 | 43.43 | -0.80% | 1,500,750 |
| Aug 15, 2025 | 42.86 | 43.82 | 42.80 | 43.78 | 43.78 | 2.17% | 1,602,702 |
| Aug 14, 2025 | 43.00 | 43.40 | 42.44 | 42.85 | 42.85 | -0.58% | 1,582,645 |
| Aug 13, 2025 | 41.54 | 43.22 | 41.54 | 43.10 | 43.10 | 4.08% | 3,020,967 |
| Aug 12, 2025 | 40.87 | 41.42 | 40.37 | 41.41 | 41.41 | 1.40% | 1,496,847 |
| Aug 11, 2025 | 41.51 | 41.93 | 40.79 | 40.84 | 40.84 | -1.92% | 1,799,768 |
| Aug 8, 2025 | 40.89 | 41.76 | 40.86 | 41.64 | 41.64 | 1.44% | 1,739,246 |
| Aug 7, 2025 | 40.34 | 41.13 | 40.03 | 41.05 | 41.05 | 0.88% | 2,741,663 |
| Aug 6, 2025 | 42.65 | 42.87 | 40.66 | 40.69 | 40.69 | -5.48% | 2,469,807 |
| Aug 5, 2025 | 43.15 | 43.52 | 42.51 | 43.05 | 43.05 | -0.92% | 2,818,449 |
| Aug 4, 2025 | 43.15 | 43.74 | 42.26 | 43.45 | 43.45 | 0.98% | 2,311,260 |
| Aug 1, 2025 | 42.65 | 43.40 | 42.28 | 43.03 | 43.03 | 0.12% | 2,327,853 |