BB Biotech AG is a Swiss investment company in the field of biotechnology. Since 1993 it is listed on the SIX Swiss Exchange, since 1997 on the German TecDAX and from 2000 to 2023 on the Italian Borsa Italiana. The company invests mainly in the United States and Western Europe and is managed by Bellevue Asset Management, a division of Bellevue Group which accounts for approximately 40% of the Group's assets under management. Wikipedia