Shayne Coplan started Polymarket from his home on New York's Lower East Side during the pandemic in June 2020. The inspiration came from economist Robin Hanson's ideas on the prediction markets and its ability to improve society, according to a Bloomberg report.Now, in October 2025, the 27-year-old is the youngest self-made billionaire, after his company secured $2 billion in funding from the New York Stock Exchange's (NYSE) parent company Intercontinental Exchange Inc. The deal has rocketed the pre-money v ...