Kalshi Ends Trump Jr. Role Over Polymarket Tie

Kalshi has ended Donald Trump Jr.’s advisory contract, describing the split as mutual and saying discussions began after his venture firm, 1789 Capital, led a major funding round for rival Polymarket. Trump Jr. joined Polymarket’s advisory board in August 2025, and 1789 Capital later invested substantially in the company, creating a conflict between his roles at the competing prediction-market platforms. His Kalshi role included equity reportedly worth about $300,000, though reports have not established whether he retains it. The departure also comes amid scrutiny of Trump family business ties to prediction markets, including questions from senators about the industry and Trump Jr.’s financial interests.