My personal favorite for medical insiders to watch is the Fabulous Baker Brothers (no relation to the 1989 musical). Felix Baker owns a Phd in Immunology and is the most massive inside buyer I know of. Julian Baker holds an A.B. Magna Cum Laude from Harvard (social studies) and this blend of intelligence founded Baker Brothers Investments in 2000, which offers their hedge fund, Baker Brothers Advisors, among a family of funds for institutional investing. Together, they are on the boards of several medical companies.
The Bakers' fund tends to run just a handful of heavy-weighted positions although they spread the money out over nearly a hundred names. What strikes me about the names they buy heavily is the high buyout rate. For example, as tabulated by J3 Information Services, the
fund's holdings, in heavy positions at the end of 2013 were : ACAD, SLXP, XOMA, GHDX, SGEN, PCYC, INCY, and GEVA. Of those eight, four have been bought out at fat premiums. That's a .500 batting average for takeout home-runs in just three years.
BAKER BROS ADVISORS LLC : Portfolio Holdings | J3SG