The son of the U.S. president has turned the conflict between two prediction market giants into a personal risk-free investment scheme. While Kalshi and Polymarket are locked in a fierce battle for users and regulatory advantage, Donald Trump Jr. finds himself in a winning position no matter how events unfold.
An analysis of Trump Jr.'s asset structure and job responsibilities reveals a unique situation. His venture fund, 1789 Capital, invested $300 million in a Polymarket funding round, after which the platform was valued at $21 billion. Meanwhile, he acquired a stake in competitor Kalshi back in 2025, when the company was valued at a modest $300,000. Today, Kalshi's market capitalization has reached $22 billion, making these investments among the most successful in the history of the venture market.
An advisor with a dual mandate
In January 2025, Trump Jr. took a paid position as a strategic advisor at Kalshi. Just seven months later, he joined the advisory board of Polymarket—it was then that 1789 Capital made its first investment in the project. Thus, the president's son found himself simultaneously connected to two platforms competing for the same users and for the right to set the rules of the game in the market.
Such a dual role inevitably raises questions about ethics and conflicts of interest. Kalshi claims that Trump Jr. is exclusively involved in marketing strategy and does not participate in regulatory matters. However, his direct influence on the industry is confirmed by other facts.
Lobbying at the highest level
Trump Jr. personally persuaded Republican attorneys general to stop pressuring event betting platforms. This took place in March at a closed meeting in New Orleans. According to him, the campaign against such platforms was initiated by traditional gambling companies seeking to protect their own businesses.
The conflict has escalated to the limit: the CFTC has filed lawsuits against nine states, trying to prevent their interference in the regulation of prediction markets. Eight of these states are led by Democratic attorneys general. The greatest intensity of passions is observed in Arizona, where criminal proceedings were initiated against Kalshi in March for illegal gambling services.
Significantly, President Donald Trump himself in May called betting markets a new financial product and spoke in favor of maintaining CFTC control over them. Thus, his son's interests in leading platforms have become an integral part of the dispute over the regulation of the entire sector.
Expert opinion: Such a strategy of "investing on both sides" demonstrates the maturity of the prediction market as an institutional asset class. However, for the industry, this is a double risk: the defeat of either platform in legal battles in individual states could create a precedent that would hit both companies. Trump Jr., apparently, has bet that regulatory uncertainty will be resolved in favor of the sector as a whole—and so far the market is justifying his expectations.