Prediction Markets Weekly: Kalshi valued at $40bn, NFL blocks Saquon Barkley’s Polymarket deal

There can be little doubt about this week’s biggest prediction markets newsmaker: the litigation war unfolding in Utah that has Kalshi’s co-founders facing felony charges and gaming operators making hasty retreats. Other notable headlines this week in the world of event contracts included: The NBA announcing its first prediction markets partnerships New York’s gambling regulator turning up the court heat on Kalshi Polymarket beginning to take sports offline in Michigan As always, every Friday, we also highlight some of the stories you might have missed in our Prediction Markets Weekly roundup. Is Kalshi really worth $40bn?