IONS vs TSEM Comparison

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).

Tower Semiconductor Ltd is a pure-play specialty foundry that manufactures semiconductors. As a pure-play foundry, it focuses on producing integrated circuits (ICs), based on the design specifications of customers. The company's line of integrated circuits is incorporated into a range of products and markets, including consumer electronics, personal computers, communications, automotive, and industrial and medical device products. It produces ICs alongside wholly-owned subsidiaries through fabrication facilities located in Japan. The company has a geographical presence in the USA, Japan, Asia (other than Japan), and Europe.