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Compare · AZN vs IONS

AZN vs IONS

Side-by-side comparison of AstraZeneca PLC (AZN) and Ionis Pharmaceuticals Inc. (IONS): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both AZN and IONS operate in Biotechnology: Pharmaceutical Preparations (Health Care), so they compete in similar markets.
  • AZN is the larger of the two at $581.12B, about 47.1x IONS ($12.34B).
  • Over the past year, AZN is down 0.4% and IONS is up 136.1% - IONS leads by 136.5 points.
  • IONS has been more active in the news (16 items in the past 4 weeks vs 14 for AZN).
  • Both have 25 recent analyst ratings on file.
PerformanceAZN-0.44%IONS-9.97%
2026-02-02+0.00%2026-04-30
MetricAZNIONS
Company
AstraZeneca PLC
Ionis Pharmaceuticals Inc.
Price
$187.45+1.19%
$74.79-0.05%
Market cap
$581.12B
$12.34B
1M return
-4.96%
-0.39%
1Y return
-0.44%
+136.08%
Industry
Biotechnology: Pharmaceutical Preparations
Biotechnology: Pharmaceutical Preparations
Exchange
NYSE
NASDAQ
IPO
2026
News (4w)
14
16
Recent ratings
25
25
AZN

AstraZeneca PLC

AstraZeneca PLC discovers, develops, manufactures, and commercializes prescription medicines in the areas of oncology, cardiovascular, renal and metabolism, respiratory, infection, neuroscience, and gastroenterology worldwide. The company's marketed products include Tagrisso, Lynparza, Imfinzi, Enhertu, Koselugo, Lumoxiti, Equidacent, Zoladex, Faslodex, Iressa, Arimidex, Casodex/Cosudex, and others for oncology diseases; Onglyza, Bydureon, Lokelma, Byetta, Qtern, Symlin, and others for cardiovascular, renal, and metabolism diseases; and Symbicort, Pulmicort, Fasenra, Daliresp/Daxas, Duaklir, Tudorza/Eklira, Bevespi, Breztri, Anifrolumab, and others for respiratory and immunology diseases. It also offers other medicines and COVID-19 products, including Synagis, Fluenz Tetra/FluMist Quadrivalent, Seroquel IR/Seroquel XR, Vimovo, Movantik/Moventig, Nexium, Losec/Prilosec, and COVID-19 Vaccine AstraZeneca. The company serves primary care and specialty care physicians through distributors and local representative offices. It has a collaboration agreement with Daiichi Sankyo to develop and commercialize DS-1062 for the treatment of trophoblast cell-surface antigen 2 (TROP2) tumor; AliveCor, Inc. to develop non-invasive potassium monitoring solutions; Massachusetts General Hospital to accelerate digital health solutions; Sanguina on smartphone application study for hemoglobin management in patients with anemia of chronic kidney disease; Alchemab to enhance prostate cancer research; and Proteros biostructures GmbH to discover and develop novel small molecules for the treatment of various types of cancer. The company was formerly known as Zeneca Group PLC and changed its name to AstraZeneca PLC in April 1999. It has a collaboration agreement with Regeneron Pharmaceuticals, Inc. to research, develop, and commercialize small molecule medicines for obesity. AstraZeneca PLC was incorporated in 1992 and is headquartered in Cambridge, the United Kingdom.

IONS

Ionis Pharmaceuticals Inc.

Ionis Pharmaceuticals, Inc. discovers and develops RNA-targeted therapeutics in the United States. The company offers SPINRAZA for spinal muscular atrophy (SMA) in pediatric and adult patients; TEGSEDI, an injection for the treatment of polyneuropathy of hereditary transthyretin-mediated amyloidosis in adults; and WAYLIVRA, a treatment for familial chylomicronemia syndrome and familial partial lipodystrophy. It is involved in developing neurology products that include Tominersen for Huntington's diseases; Tofersen for amyotrophic lateral sclerosis (ALS); IONIS-MAPTRx for Alzheimer's diseases; IONIS-C9Rx for genetic form of ALS; ION859 for Parkinson's disease; ION464 for multiple system atrophy and Parkinson's disease; ION541 for amyotrophic lateral sclerosis; and IONIS-DNM2-2.5Rx for centronuclear myopathy. The company is also developing products for cardiometabolic disease, such as IONIS-TTR-LRx for transthyretin amyloidosis and IONIS-GHR-LRx for acromegaly; IONIS-APOCIII-LRx for familial chylomicronemia syndrome and TG- driven diseases; IONIS-APOCIII-LRx for treatment resistant hypertension; Pelacarsen for Lp(a)cardiovascular disease risk reduction; Vupanorsen for sHTG/CVDRR; IONIS-FXI-LRx for clotting disorders; ION449 for cardiovascular diseases; and IONIS-GCGRRx for diabetics. In addition, it develops IONIS-ENAC-2.5Rx for cystic fibrosis and chronic obstructive pulmonary disease; IONIS-PKK-LRx for hereditary angioedema; Danvatirsen for cancer; IONIS-TMPRSS6-LRx for beta-thalassemia and iron toxicity; IONIS-HBVRx for hepatitis B virus; IONIS-AR-2.5Rx for prostate cancer; IONIS-FB-LRx for age-related macular degeneration and IgA nephropathy; and ION357 for retinitis pigmentosa. It has a collaboration agreement with AstraZeneca; GlaxoSmithKline plc; Janssen Biotech, Inc.; Bayer AG; Novartis AG; Pfizer, Inc.; Biogen Inc.; and Roche. Ionis Pharmaceuticals, Inc. was founded in 1989 and is based in Carlsbad, California.

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