1789 Capital plans to invest roughly $300 million in Polymarket’s reported funding round, sources said.The planned $1 billion raise would value Polymarket at approximately $21 billion after new investment.1789 Capital previously invested around $200 million and could become one of Polymarket’s largest backers.ICE remains Polymarket’s largest investor after accumulating approximately 22% of the company’s outstanding shares overall.Polymarket’s U.S. exchange holds CFTC designation while state challenges continue targeting sports event contracts nationwide.