Ionis Pharmaceuticals, Inc. (IONS)
NASDAQ: IONS · Real-Time Price · USD
42.69
-0.55 (-1.26%)
At close: Aug 22, 2025, 4:00 PM
43.00
+0.31 (0.73%)
After-hours: Aug 22, 2025, 5:23 PM EDT
Ionis Pharmaceuticals Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Aug 22, 2025 | 43.68 | 43.72 | 42.09 | 42.69 | 42.69 | -1.26% | 1,859,506 |
| 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 |
| Jul 31, 2025 | 44.37 | 44.98 | 42.33 | 42.98 | 42.98 | -0.90% | 3,544,061 |
| Jul 30, 2025 | 44.97 | 45.66 | 42.95 | 43.37 | 43.37 | 4.56% | 4,183,352 |
| Jul 29, 2025 | 41.59 | 41.65 | 40.81 | 41.48 | 41.48 | 0.75% | 1,503,992 |
| Jul 28, 2025 | 42.43 | 42.49 | 41.15 | 41.17 | 41.17 | -2.54% | 1,640,746 |
| Jul 25, 2025 | 42.34 | 42.55 | 41.60 | 42.25 | 42.25 | 0.23% | 887,852 |
| Jul 24, 2025 | 42.35 | 42.81 | 42.12 | 42.15 | 42.15 | -0.54% | 879,296 |
| Jul 23, 2025 | 42.27 | 42.77 | 41.70 | 42.38 | 42.38 | 1.03% | 1,440,178 |
| Jul 22, 2025 | 41.51 | 42.22 | 41.25 | 41.95 | 41.95 | 0.96% | 1,458,531 |
| Jul 21, 2025 | 41.97 | 42.58 | 41.49 | 41.55 | 41.55 | -0.50% | 1,418,085 |
| Jul 18, 2025 | 42.15 | 42.57 | 41.25 | 41.76 | 41.76 | -0.97% | 1,266,278 |
| Jul 17, 2025 | 42.90 | 43.30 | 42.12 | 42.17 | 42.17 | -1.40% | 1,996,392 |
| Jul 16, 2025 | 42.09 | 42.91 | 41.79 | 42.77 | 42.77 | 1.83% | 1,384,417 |
| Jul 15, 2025 | 42.78 | 42.99 | 41.62 | 42.00 | 42.00 | -1.29% | 1,799,434 |
| Jul 14, 2025 | 41.38 | 43.64 | 41.28 | 42.55 | 42.55 | 1.97% | 2,444,915 |
| Jul 11, 2025 | 42.00 | 42.19 | 41.45 | 41.73 | 41.73 | -1.53% | 1,545,454 |
| Jul 10, 2025 | 42.92 | 42.92 | 41.67 | 42.38 | 42.38 | -1.05% | 1,951,967 |
| Jul 9, 2025 | 41.65 | 42.95 | 41.44 | 42.83 | 42.83 | 3.60% | 1,686,234 |
| Jul 8, 2025 | 41.52 | 42.13 | 41.22 | 41.34 | 41.34 | -1.05% | 1,752,923 |
| Jul 7, 2025 | 42.68 | 42.68 | 41.43 | 41.78 | 41.78 | -2.84% | 2,239,897 |
| Jul 3, 2025 | 43.35 | 43.66 | 42.44 | 43.00 | 43.00 | -1.35% | 1,335,953 |
| Jul 2, 2025 | 39.97 | 43.71 | 39.86 | 43.59 | 43.59 | 9.14% | 4,232,744 |
| Jul 1, 2025 | 40.25 | 40.82 | 39.72 | 39.94 | 39.94 | 1.09% | 3,308,527 |
| Jun 30, 2025 | 39.95 | 40.23 | 39.37 | 39.51 | 39.51 | -0.73% | 1,597,090 |
| Jun 27, 2025 | 39.77 | 40.11 | 39.55 | 39.80 | 39.80 | 0.05% | 2,481,663 |
| Jun 26, 2025 | 40.39 | 40.61 | 39.73 | 39.78 | 39.78 | -0.55% | 1,805,965 |
| Jun 25, 2025 | 39.67 | 40.15 | 38.99 | 40.00 | 40.00 | 0.91% | 1,988,531 |
| Jun 24, 2025 | 37.87 | 39.94 | 37.32 | 39.64 | 39.64 | 5.23% | 2,840,095 |
| Jun 23, 2025 | 37.37 | 38.07 | 36.93 | 37.67 | 37.67 | 0.70% | 1,438,622 |
| Jun 20, 2025 | 37.30 | 37.52 | 36.45 | 37.41 | 37.41 | 1.08% | 2,290,642 |
| Jun 18, 2025 | 36.31 | 37.54 | 36.11 | 37.01 | 37.01 | 2.38% | 1,964,511 |
| Jun 17, 2025 | 35.70 | 36.33 | 34.84 | 36.15 | 36.15 | 2.58% | 1,621,640 |
| Jun 16, 2025 | 35.72 | 35.86 | 34.78 | 35.24 | 35.24 | -0.98% | 1,716,622 |
| Jun 13, 2025 | 35.05 | 35.67 | 35.05 | 35.59 | 35.59 | -0.08% | 1,483,999 |
| Jun 12, 2025 | 35.76 | 36.16 | 35.30 | 35.62 | 35.62 | -1.58% | 1,683,419 |