Jacob Gottlieb

Several of the government’s hard-won convictions were overturned following an appellate court ruling making it harder to prosecute for insider trading, but the government is still taking a hard look at hedge funds, a recent inquiry into New York–based Visium shows.

Viking Global, Glenview Capital and Visium profit as stocks like Actavis, Anthem and Cigna rise on takeover fever.

Jacob Gottlieb’s hedge fund firm offers a heavy dose of health care, and a balance of longs and shorts.

Jacob Gottlieb wants to transform his health-care-focused hedge fund firm into a multistrategy manager to rival the greats.