Jeff Yass's Biography

Jeff Yass is an American billionaire investor, entrepreneur, and philanthropist best known as the co-founder and managing director of Susquehanna International Group (SIG), one of the world’s largest and most successful trading and technology firms. Born on July 19, 1956, Yass grew up with a passion for mathematics and probability, which he later applied to both professional poker and quantitative trading. After graduating from Binghamton University with a degree in mathematics and economics, he began his career in gambling and poker, developing the risk management skills that would serve as the foundation for his future business ventures. In 1987, Yass co-founded SIG with a group of friends, quickly gaining a reputation for innovative trading strategies, rapid technology adoption, and a unique, probability-driven approach to financial markets. Over the decades, the firm has expanded globally, with investments in companies like ByteDance, the parent company of TikTok, significantly boosting Yass’s fortune. Aside from business, Yass is a prominent philanthropist, particularly in the field of education reform, and is known for his significant political contributions. Despite his wealth and influence, he maintains a low public profile, rarely appearing in the media. As of 2024, Jeff Yass’s net worth is estimated at $28 billion, making him one of the richest people in finance. Notably, his early experience as a professional poker player continues to influence his investment philosophy, emphasizing risk management, probability, and strategic thinking in both business and life.