Kalshi leads prediction market with 76% share in NFL week 1
Needham reported $14.6B in prediction market volume for NFL week 1, up 29% from World Cup highs. Kalshi led with 76% share, followed by Polymarket and DKeX. Consumer equivalent handle was $2.1B, with Kalshi's share dropping to 67%. DraftKings may understate its volume due to multi-exchange feeding.





