The FBI raided his apartment at 26. At 27, he became the youngest self-made billionaire on earth. > at 14, he emailed the SEC asking if his stock exchange idea was legal > signed it "I'm a high school sophomore here in Manhattan" > bought Ethereum during its 2014 presale as a teenager > attended NYU, dropped out > started building a prediction market from his bathroom during the pandemic > it's called Polymarket, a platform where people bet on real-world events > the bathroom was the only quiet spot in his apartment > he was 21, running out of money, nothing to show for it > early investors thought he was "nuts" > in 2022 the CFTC fined him and made him ban US users > he kept building > the 2024 US election made Polymarket famous overnight > $3.7 billion bet on the presidential race alone > in November 2024 the FBI raided his apartment and seized his phone > the Trump administration dismissed both federal probes > the CEO of the New York Stock Exchange invited him to dinner > he showed up with a bagel in a T-shirt > NYSE's parent company invested $2 billion, valued Polymarket at $9 billion His name is Shayne Coplan.