MarketsRegulation2 SourcesKalshi Reports $2.5B in Midterm Volume, Says Favorites Won 98% of Resolved RacesKalshi reported more than $2.5 billion in trading volume on its 2026 U.S. midterm markets, roughly double the $1.3 billi...Nov 7, 2026, 11:38 AMKalshiPolymarket