Peng Zhao

Peng Zhao, CEO, Citadel Securities Photograph by Lucy Hewett for Fortune
  • Age
  • Title
  • Company
    Citadel Securities

Industry: Finance

He may have started as Ken Griffin’s protégé, but the Beijing-born Zhao has earned his own spot at the top of the finance world. After completing a doctorate in statistics from UC–Berkeley, Zhao ascended from quant research to overseeing the core market-making business for Citadel Securities, the computerized trading firm founded by Griffin (but run separately from his $30 billion Citadel hedge fund). Zhao proved so good at growing its products and revenue that when the firm decided it needed a new CEO in 2017, he was the obvious choice. Under Zhao, Citadel Securities has not only widened its lead as the top market maker in U.S. stocks—thanks in part to the petabytes of data the firm collects to inform its trading—but also expanded into the hot arena of initial public offerings. It began to serve as a designated market maker for IPOs a few years ago; last year, Spotify picked Zhao’s firm to oversee the music streaming service’s first-of-its-kind “direct listing” on the NYSE, bypassing traditional IPO underwriters. Zhao, who became a U.S. citizen in 2016, has since turned Citadel Securities into the go-to firm for the pioneering practice: It managed Slack’s highly anticipated direct listing in June, after serving in the same role for Uber’s traditional IPO this spring. 

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List Debut2019