Donald Trump Jr’s venture capital firm, 1789 Capital, announced on August 31, 2026, that it will lead a $1 billion funding round for Polymarket, putting the company's valuation at $21 billion [1, 2, 3]. The firm plans to invest approximately $300 million in this latest round, following a previous $200 million investment in the prediction market platform [1, 2, 3].
Polymarket is among the largest prediction markets, competing directly with Kalshi, which also focuses on event-based trading [1, 2, 3]. Donald Trump Jr joined Polymarket's advisory board and separately serves as a strategic advisor to Kalshi, receiving roughly $300,000 in shares since January 2025 [1, 2]. He has stated, "I invested as a private citizen and held no policy position and no role within the administration whatsoever" [1]. Trump Jr noted that on election night in 2024, his family used Kalshi's prediction market to get early results ahead of mainstream coverage [2].
1789 Capital has grown rapidly, managing assets of more than $3 billion as of 2026, up from just a few hundred million two years ago [1]. The fund and the Trump family’s political connections have attracted congressional Democratic inquiries over possible conflicts of interest [3].
Polymarket faces legal and regulatory challenges across several U.S. states, as does its competitor Kalshi, which could impact its operations ahead [3]. As of July 2026, Intercontinental Exchange (ICE) holds the largest single stake in Polymarket at about 22%, valued at $1.6 billion [3].
The funding round led by 1789 Capital is a major step as Polymarket looks to expand operations and navigate the evolving regulatory environment. Discussions and developments around regulatory scrutiny and congressional interest are expected to continue in the coming months [3].
