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Ionis Pharmaceuticals, Inc. (IONS)
NASDAQ: IONS · Real-Time Price · USD
79.93
-0.72 (-0.89%)
At close: Dec 26, 2025, 4:00 PM EST
81.20
+1.27 (1.59%)
After-hours: Dec 26, 2025, 6:25 PM EST

Ionis Pharmaceuticals Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Dec 26, 202580.1580.4279.1879.9379.93-0.89%719,869
Dec 24, 202580.3381.0280.3380.6580.650.40%476,102
Dec 23, 202580.6181.8479.6380.3380.33-1.24%1,229,912
Dec 22, 202579.2682.0979.0981.3481.342.22%2,241,220
Dec 19, 202577.8079.8377.6379.5779.572.50%3,541,081
Dec 18, 202577.3978.1676.7077.6377.630.71%1,765,565
Dec 17, 202578.7779.4977.0777.0877.08-1.65%2,145,804
Dec 16, 202579.4179.5677.1678.3778.37-1.74%1,949,117
Dec 15, 202580.3581.0079.3179.7679.76-1.31%1,977,623
Dec 12, 202579.1980.9278.5180.8280.822.12%1,468,874
Dec 11, 202578.6379.8678.0579.1479.140.65%2,052,190
Dec 10, 202579.3879.7177.7978.6378.63-0.29%2,659,323
Dec 9, 202580.5581.2378.3278.8678.86-3.25%1,866,195
Dec 8, 202582.1282.8681.1881.5181.51-0.21%1,553,581
Dec 5, 202582.1982.4480.6481.6881.68-0.16%1,714,476
Dec 4, 202581.9083.6181.4581.8181.81-0.04%2,312,966
Dec 3, 202581.7083.0980.9881.8481.840.65%2,530,628
Dec 2, 202582.3882.6980.0081.3181.31-0.83%2,454,554
Dec 1, 202582.0382.2780.1181.9981.99-0.89%1,865,402
Nov 28, 202582.5982.9581.6782.7382.730.04%852,943
Nov 26, 202581.1582.9180.7582.7082.702.19%2,955,547
Nov 25, 202578.5281.2078.3380.9380.933.07%2,543,172
Nov 24, 202576.3478.7976.1678.5278.523.19%3,217,036
Nov 21, 202573.0076.3173.0076.0976.094.06%2,076,032
Nov 20, 202574.1775.4072.5073.1273.12-1.19%3,208,760
Nov 19, 202574.5575.0071.8374.0074.00-0.67%3,620,815
Nov 18, 202572.8174.5271.9974.5074.501.69%2,056,681
Nov 17, 202570.7074.4270.7073.2673.262.39%3,504,705
Nov 14, 202569.6672.5468.9071.5571.552.45%3,372,265
Nov 13, 202572.5673.0568.2269.8469.84-3.89%11,502,846
Nov 12, 202571.1974.5070.4072.6772.670.30%5,067,958
Nov 11, 202569.3272.7968.5572.4572.454.18%2,268,649
Nov 10, 202570.0571.4966.6669.5469.54-5.45%4,399,684
Nov 7, 202573.5875.0072.3673.5573.55-0.74%2,332,419
Nov 6, 202574.5876.7873.9174.1074.10-0.78%2,424,206
Nov 5, 202572.1475.0871.4874.6874.682.47%2,259,305
Nov 4, 202572.4074.2172.4072.8872.88-1.05%1,726,391
Nov 3, 202574.7775.2571.9573.6573.65-0.87%2,576,035
Oct 31, 202574.5075.4974.0274.3074.300.18%2,395,612
Oct 30, 202571.9174.7071.6674.1774.173.19%2,177,727
Oct 29, 202572.3774.0571.1471.8871.88-2.30%2,164,198
Oct 28, 202572.9974.0472.5073.5773.570.79%2,559,568
Oct 27, 202572.0373.2771.4672.9972.993.01%1,842,613
Oct 24, 202572.3972.4470.2270.8670.86-0.90%1,990,370
Oct 23, 202571.6972.4471.0571.5071.50-1,605,852
Oct 22, 202571.2371.9870.6071.5071.50-0.20%1,508,356
Oct 21, 202572.9473.2070.4771.6471.64-2.60%2,529,928
Oct 20, 202573.5573.6972.3073.5573.550.63%1,395,624
Oct 17, 202572.9674.0272.3273.0973.090.03%1,310,772
Oct 16, 202573.1274.4272.0773.0773.070.94%1,739,636