Sophie Watts, 30
Watts’ mission at STX, an ambitious Hollywood studio founded in 2014, is to build out its various divisions: film, TV, digital, and music. Launching a new entertainment conglomerate is no small feat, but Watts has the pedigree—she cut her teeth working on productions with the likes of Beyoncé, Elton John, and Madonna (and her late mother, Tessa Watts, was a lauded record executive and music-video producer). STX is well capitalized, giving Watts $7 billion over the next five years for developing and distributing films alone. Admires: Richard Branson.