Kalshi ends Donald Trump Jr’s advisory role after 1789 Capital backs Polymarket

Kalshi and Polymarket both operate in the prediction-market space, where firms compete for users, liquidity, and credibility while navigating a regulatory environment that is still closely watched. Donald Trump Jr.’s advisory role at Kalshi placed a politically visible figure inside that competition, which made any overlap with another market participant notable. The fact that 1789 Capital also has an investment role in Polymarket makes this more than a routine personnel change.

For people building or using prediction markets, this kind of move signals that advisory ties can be reconsidered when a firm’s commercial relationships intersect with a direct competitor. Teams that rely on outside advisers with venture or strategic stakes in rival venues may need to separate those roles more sharply. It also shows that boardroom and advisory decisions in crypto-adjacent markets can ripple into competition between platforms, not just internal governance. (per cryptobriefing.com)

The wider tension is between open capital networks in crypto and the expectation that a market operator will keep conflicted influence at arm’s length. Prediction markets already depend on trust in fairness, so outside ties to a rival can become a governance issue even without any on-chain dispute. This is especially sensitive when the names involved are politically prominent, because the appearance of favoritism can matter almost as much as the formal contract.

What is still open is how Kalshi will define similar conflicts in future advisory or investor relationships, and whether other prediction-market firms will draw the same line. The available details do not say what specific terms were in Trump Jr.’s contract or whether Polymarket’s investment from 1789 Capital will change any other arrangements. A fuller account would need the contract terms and any follow-up statements from Kalshi, 1789 Capital, or Polymarket.

The total crypto market fell 0.1% in the 4 hours after the first headline, after falling 0.3% in the 2 hours before.

47 prices, one every 30 minutes · The move was larger before the first headline than after: an observation, not an explanation. The market also moves on things nobody publishes.