Polymarket reportedly raises $300 million from Donald Trump Jr.’s investment fund

Platforms are offering a way for users trade positions — place bets — on a wide range of possible events, and newsrooms are starting to incorporate the data.

As the business rapidly grows, critics and opponents are pushing back. Numerous states have argued that the markets are gambling, and sports gambling in particular is regulated by the state. The Commodity Futures Trading Commission, now led by a Trump appointee, disagrees — as did a federal district court judge in a suit involving New Jersey. 

Critics see some of the markets as, particularly in the case of military actions, indefensible, and note as well that some large, well-timed bets — “event contracts” — suggest an abuse of insider knowledge of federal actions.