Kalshi ends Donald Trump Jr.’s advisory contract over 1789 Capital’s Polymarket investment
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Kalshi has ended Donald Trump Jr.’s strategic adviser contract after 1789 Capital, the venture firm where he serves as a partner, invested in rival prediction market Polymarket. Trump Jr. had joined Kalshi in January 2025 to help broaden its customer base and bolster its market presence. The split highlights growing competitive and governance tensions in the prediction-market sector as Polymarket and Kalshi vie for share of event-contract trading. Watch for how the move affects Kalshi’s marketing reach and whether 1789 Capital’s Polymarket ties influence future partnership or capital decisions.
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Named in this story
Donald Trump Jr., Kalshi, 1789 Capital, Polymarket