You can use the BetMGM bonus code SI1500 right now to get a $1,500 first bet offer when you create a new online sportsbook account with one of the best betting sites in the U.S. Below, we’ll walk you ...

Although its market predictions platform launched in 2021, Kalshi only added its sports offerings in late January 2025. As such, there are fewer markets and bonuses than at traditional betting sites ...