Odaily News After the US presidential election ended on November 5, the open interest of the decentralized prediction market Polymarket plummeted by 64%, and Republican Donald Trump was elected the 47th president. The Block data showed that Polymarket's open interest soared to $510.95 million on November 5, and then fell to $184.16 million on November 8. Polymarket founder and CEO Shayne Coplan once wrote on the X platform on November 6: "There is no doubt that Polymarket single-handedly determined the election results."