Ionis Pharmaceuticals, Inc. Share Price
NASDAQ: IONS | Mid CapIonis Pharmaceuticals, Inc. Stock Performance
Ionis Pharmaceuticals, Inc. Share Price Today
As of 29 October 2026, Ionis Pharmaceuticals, Inc.'s share price is $45.58. The stock opened at $45.57, compared to its previous close of $44.91. During today's trading session, Ionis Pharmaceuticals, Inc.'s share price traded between $45.26 and $45.77, with an average price of $45.51. Over the past 52 weeks, the stock has recorded a high of $86.71 and a low of $42.18. In terms of performance, Ionis Pharmaceuticals, Inc.'s share price has declined by 39.06% over the last six months and is down 38.63% on a year-on-year basis.
Ionis Pharmaceuticals, Inc. Share Price Chart
Ionis Pharmaceuticals, Inc. Quarterly Profit & Loss
All figures in USD
Ionis Pharmaceuticals, Inc. Annual Profit & Loss
All figures in USD
About Ionis Pharmaceuticals, Inc.
Ionis Pharmaceuticals is the leading developer of antisense technology to discover and develop novel drugs. Its broad clinical and preclinical pipeline targets a wide variety of diseases, with an emphasis on cardiovascular, metabolic, neurological, and rare diseases. Ionis and Biogen brought Spinraza to market in 2016 as a treatment for spinal muscular atrophy, and Biogen launched ALS drug Qalsody in 2023. Ionis brought two additional drugs to market via its cardiovascular-focused subsidiary Akcea, including ATTR amyloidosis drug Tegsedi (2018) and cardiology drug Waylivra (Europe, 2019). Ionis and AstraZeneca launched polyneuropathy drug Wainua in 2024. Ionis marked its first two independent launches in 2025 for Tryngolza (for FCS) and Dawnzera (for HAE).
Ionis Pharmaceuticals, Inc. Historical Returns
| Month | Open | Close | Change % |
|---|---|---|---|
Oct 2026 | $44.64 | $45.65 | +2.17% |
Sep 2026 | $60.84 | $44.68 | -28.45% |
Aug 2026 | $52.63 | $62.45 | +20.60% |
Jul 2026 | $79.20 | $51.78 | -34.74% |
Jun 2026 | $76.19 | $79.34 | +3.72% |
May 2026 | $75.16 | $76.50 | +2.28% |
Apr 2026 | $75.50 | $74.79 | -0.39% |
Mar 2026 | $79.44 | $75.08 | -7.45% |
Feb 2026 | $82.49 | $81.12 | -1.86% |
Jan 2026 | $78.99 | $82.66 | +4.43% |
Dec 2025 | $82.02 | $79.15 | -4.36% |
Nov 2025 | $74.38 | $82.75 | +11.42% |