Lisa Su

Though she didn’t get nearly as much attention as Marissa Mayer at Yahoo, Su’s challenge when she joined struggling semiconductor maker AMD in 2014 was perhaps just as great—and what’s more, Su has succeeded. A former chip designer, Su diversified AMD away from the PC market to focus on higher-growth areas like chips for videogaming consoles and data-center servers. She also made a savvy deal to license chip designs in China. Her reward: rebounding sales and a stock price that quadrupled in 2016.