Kalshi’s Custom Parlays Hammer Traditional Sportsbooks Like DraftKings and Flutter

When South Park starts promoting your competitor, you know things have hit a new level of weird. Sports betting platforms like FlutterFLUT

and DraftKingsDKNG

are getting cooked by prediction market upstarts — with the two stocks plunging between 15% and 26% this past month. With Kalshi’s launch of customizable parlays triggering fresh selloffs Tuesday, the old guard is on its heels in the industry set to hit $14B by decade’s end.

• By launching one of sportsbooks’ most profitable products, Kalshi is directly undercutting traditional players — spooking investors as it rolls into states where rivals can’t even compete.
• This comes as live wagers have exploded with mobile access and broader legalization — with these instant transactions now making up more than half of DraftKings’ and FanDuel’s revenue.

Slice of your wallet: As legacy sportsbooks cede their edge, lawmakers and public health experts are pushing for an industry clampdown — proposing federal standards and outright bans amid risks ranging from addiction to manipulation. In response, operators are scrambling to invest in responsible gaming tools and hyper-personalization, hoping to retain customers safely. Still, Rachel Volberg, who’s spent 40 years researching gambling behavior, warns it’s become “more akin to a slot machine … than a lottery ticket.” With these stakes so high, everyone must have plenty riding on whatever comes next.