Polymarket volume fell to $8.41B in August from $12.89B in July. Kalshi grew to $38.67B, processing 5x more volume.

Donald Trump Jr. strengthens ties with two of the largest prediction market platforms in the U.S. – Kalshi and Polymarket.

Kalshi platform has signed an exclusive agreement with the United States Tennis Association. The company became the sole prediction markets partner of the Open Championship.

Event contracts exchange Kalshi has reported raising $1.12 billion through a private placement of shares.