Trump Family: Donald Trump Jr. Leaves Advisory Role at Betting Platform Kalshi

Donald Trump Jr. has ceased being a paid advisor to the prediction platform Kalshi. Both parties mutually agreed to end their collaboration, the company announced on Thursday. The reason behind this decision is the significant investment made by the 1789 Capital investment firm, of which Trump Jr. is a part, in Polymarket, the leading competitor.

Trump Jr., the eldest son of former US President Donald Trump, joined Kalshi as a strategic advisor shortly after his father's inauguration for his second term in January 2025. Since August 2025, he has also become an investor in Polymarket. In August, 1789 Capital increased its stake in the platform through a new financing round.

This decision comes at a politically sensitive time as the Democrats have taken control of both chambers of the US Congress following their success in the midterm elections. They have announced their intention to investigate the investments of the Trump family and their business relationships with the two prediction platforms. Both companies have gained considerable importance in the past two years.

Moreover, the industry benefits from a supportive stance of the Trump administration, with the US regulatory authority advocating for a nationwide expansion of sports betting offerings, including contracts on sporting events.