Kalshi and Polymarket diverge again on World Cup 2026 favorite pricing
Kalshi has launched a full suite of 2026 FIFA World Cup prediction markets, including a tournament winner contract, Golden Ball futures on Lionel Messi, and Israel-specific group and knockout outcomes. The contracts went live on June 1, roughly one day after Polymarket opened its own World Cup winner, match, and Neymar participation markets. Sports Illustrated reported that France and Spain have swapped positions as favorites since markets opened, with France now outright favorite on both platforms. The top nine favorite teams are identical across Kalshi and Polymarket, though pricing diverges enough that comparison sites are flagging value differences. Kalshi's World Cup Winner contract is already trending above March Madness and is projected to reach roughly $253 million in volume by tournament end, according to DeFi Rate.
Kalshi must convert its Interactive Brokers integration into actual institutional volume before Polymarket's OneFootball partnership and Nasdaq Private Market pipeline close the gap. Any liquidity shortfall will cede the forecasted $1.47–1.93 billion in Kalshi-tied World Cup flow to the sharper-priced rival book.
Brings the running tally of World Cup venue launches to three — Polymarket winner markets, Kalshi winner markets, and now the OneFootball exclusive — as the two platforms race to lock in liquidity ahead of the forecasted $2.5 billion in US tournament volume.