This week on Generating Alpha, I sat down with Thomas Peterffy — founder of Interactive Brokers, one of the most profitable and technologically advanced trading platforms in the world, used by nearly every professional trader.Born in post–WWII Hungary, Peterffy grew up under communist rule before escaping the Soviet Bloc and arriving in New York in 1965 with no money and no ability to speak English. He started as a draftsman, taught himself to code, and eventually found his way onto Wall Street — where he revolutionized finance by bringing computers to options trading decades before it became the norm.Over time, Peterffy built Interactive Brokers into a $120 billion global powerhouse with profit margins higher than Visa’s. His relentless focus on automation, transparency, and efficiency helped define the modern era of electronic trading and made IBKR the go-to platform for professionals around the world.In our conversation, we spoke about his early life behind the Iron Curtain, how he built one of the most advanced trading systems ever created, his philosophy on risk and innovation, and what continues to drive him even after becoming the 22nd richest person in the world.It’s a story of grit, intellect, and visionary ambition — from a refugee who transformed the very structure of global markets.