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Ionis Pharmaceuticals, Inc.

IONS

27.67−0.66 (−2.32%)Nov 12, 7:57 PM ET

Key stats

Open
28.07
Day high
28.56
Day low
27.28
Previous close
28.33
Volume
6.20M
VWAP
27.50
52-week high
86.74
52-week low
27.28
Market cap
4.72B
Shares out
166.18M
Employees
1,402
Listed
1991

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).

PHARMACEUTICAL PREPARATIONS · CARLSBAD, CA · ionis.com

Options · expiring Nov 20

Nov 12, 4:00 PM ET
Call open interest
857
Put open interest
817
Put/call
0.95
At-the-money IV
33.6%
Most traded contracts
ContractLastTradedVolumeOpen int.IV
27.50 put0.95Nov 12, 3:54 PM6242564.4%
30 call0.25Nov 12, 2:47 PM4624963.8%
32.50 call0.08Nov 12, 2:55 PM2043969.1%
27.50 call0.96Nov 12, 3:24 PM1516733.6%
30 put2.80Nov 12, 2:52 PM338769.8%
25 call4.00Nov 10, 10:44 AM2267.7%

Quarterly results

Massive · Nov 9, 2026
Q3 2026
to Sep 30, 2026
Q2 2026
to Jun 30, 2026
Q1 2026
to Mar 31, 2026
Q4 2025
to Dec 31, 2025
Revenue$242.72M$267.95M$246.09M$203.33M
Gross profit$239.40M$265.21M$243.11M$195.37M
Operating income−$130.70M−$102.29M−$117.42M−$214.46M
Net income−$109.97M−$114.65M−$92.53M−$229.39M
Diluted EPS-0.66-0.69-0.56-1.65
Operating cash flow−$179.42M$565.53M−$792.82M−$137.71M
Assets$2.91B$2.99B$3.45B$3.52B
Liabilities$2.52B$2.55B$2.96B$3.03B
Equity$393.64M$439.74M$491.41M$489.09M

Technicals

Massive · Nov 12, 2026
  • 50-day average44.24
  • 200-day average64.77
  • RSI (14 days)17.2

Short interest

Massive · Oct 30, 2026
  • Oct 30, 202621.17M shares · 8.4 days to cover
  • Oct 15, 202620.65M shares · 7.7 days to cover
  • Sep 30, 202622.51M shares · 4.6 days to cover
  • Sep 15, 202620.89M shares · 5.2 days to cover

News coverage

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