# Kalshi Ends Donald Trump Jr.'s Advisor Role: Reuters

*Author: David Christopher*
*Published: Nov 12, 2026*
*Source: https://www.bankless.com/read/news/kalshi-ends-donald-trump-jr-advisor-role*

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Prediction market Kalshi has ended its advisory contract with Donald Trump Jr. after his venture firm 1789 Capital increased its stake in rival Polymarket, a spokesperson [told Reuters](https://www.channelnewsasia.com/business/exclusive-kalshi-ends-donald-trump-jrs-advisory-contract-due-polymarket-conflict-6547251). 

## What's the Scoop?

- **The Split:** "We have mutually agreed to end Don's advisory role after his firm's significant investment in a competitor this past summer. We are grateful for his contributions in helping us market Kalshi to more customers," the spokesperson said. Conversations started in August, after 1789 led Polymarket's most recent funding round, a $1B raise at a $21B valuation, [per CoinDesk](https://www.coindesk.com/business/2026/09/01/trump-jr-s-firm-leads-usd1-billion-polymarket-raise-at-usd21-billion-value-report), citing a 1789 spokesperson. 

- **Both Sides:** Kalshi [named](https://news.kalshi.com/p/donald-trump-jr-strategic-advisor) Trump Jr. a strategic advisor in January 2025 and gave him a stake the [Financial Times](https://www.ft.com/content/f70147b1-ee77-4d75-8587-707a49ddb605) later reported was worth $300,000. He also [joined](https://www.prnewswire.com/news-releases/polymarket-receives-strategic-investment-from-1789-capital-and-welcomes-donald-trump-jr-to-advisory-board-302538997.html) Polymarket's advisory board in August 2025, when 1789 first invested. Neither Polymarket nor Trump Jr. immediately responded to Reuters. 

- **The Scrutiny:** In a Nov. 9 [letter](https://www.warren.senate.gov/wp-content/uploads/2026/11/2026.11.6-Teleprompter-Insider-Trading-Letter.pdf), Sens. Elizabeth Warren and Jeff Merkley flagged Trump Jr.'s advisory roles and financial interests in prediction-market platforms and asked the White House for answers by Nov. 23. Warren is set to [chair](https://www.bankless.com/read/news/warren-puts-prediction-markets-trump-crypto-on-banking-agenda) the Senate Banking Committee and has vowed to crack down on insider trading in the sector, as well as examine the Trump family’s business ventures.
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