In the company’s first decade, Tenev and his co-founder, Baiju Bhatt, proved particularly good at capturing generational vibe shifts. The pair harnessed the lingering spirit of Occupy Wall Street with Robinhood’s 2014 launch, promoting free trades as part of a mission to “democratize” investing. Its mobile-first, gamified design took cues from social media companies, not hidebound legacy brokerages.