Tagged: harmonic-ai

Vlad Tenev is the Bulgarian-American co-founder and CEO of Robinhood Markets, the company that forced Wall Street to abolish trading commissions and put a brokerage in every pocket. Born in Varna, Bulgaria, and raised in Virginia after emigrating at age 5, Tenev studied mathematics at Stanford and UCLA before dropping his PhD to build trading software startups. In 2013, he and Baiju Bhatt launched Robinhood to give ordinary people the same tools as professional traders - for free. After navigating the GameStop firestorm, congressional testimony, a bruising post-IPO collapse, and two rounds of layoffs, Tenev rebuilt Robinhood into a diversified financial platform now worth nearly $100 billion and included in the S&P 500. He also co-founded Harmonic, an AI startup pursuing mathematical superintelligence, which reached a $1.45 billion valuation in 2025 after its AI model won a Gold Medal at the International Mathematical Olympiad.