Online trading platform Webull will now allow US retail investors to bet on the future prices of bitcoin and ethereum through a partnership with Kalshi (Paige Smith/Bloomberg)

Paige Smith / Bloomberg: Online trading platform Webull will now allow US retail investors to bet on the future prices of bitcoin and ethereum through a partnership with Kalshi  —  The company is tapping the prediction-markets firm Kalshi to roll out the expansion, according to a statement Tuesday.