England, Argentina meet in World Cup semifinal in Atlanta

England and Argentina met Wednesday in the 2026 FIFA World Cup semifinal at Mercedes-Benz Stadium in Atlanta, with prediction markets reflecting one of the tightest matchups of the tournament. On Polymarket, England was priced at roughly 55% to advance to the final, while Argentina sat at approximately 45–46%, according to market data from both Polymarket and Kalshi.polymarket+2

A Three-Way Coin Flip in Regulation

The regulation-time moneyline on Polymarket told an even more dramatic story: England at around 36%, a draw at 33%, and Argentina at 31%—essentially splitting the probability three ways. Kalshi's prices mirrored that distribution, listing England at $0.36, Argentina at $0.32, and a draw at $0.34 per share. The under 2.5 goals was favored at roughly 60 cents on both platforms, consistent with sportsbook pricing that universally expected a low-scoring affair.polymarket+4

Player prop markets added another layer of intrigue. Lionel Messi was priced at 39% to score anytime, according to Polymarket data published on matchday. Harry Kane, England's captain and leading scorer, carried similar implied probability in anytime goalscorer markets. ESPN's preview panel was split on the outcome, with predictions ranging from a 1-0 England win to a 2-1 Argentina victory.cleveland+2

Record-Breaking Volume for Prediction Platforms

The semifinal generated $27.8 million in trading volume on Polymarket's "team to advance" market alone, with an additional $38.5 million traded on the moneyline. That single-match haul capped a record-setting World Cup for the prediction market sector. CoinDesk reported that platforms collectively surpassed $50 billion in monthly trading volume during June, the tournament's opening month. Kalshi alone posted $31 billion in notional volume that month, a more than 70% increase from May.facebook+3

The World Cup has served as a breakout moment for U.S. prediction markets following Polymarket's legal return to American users. The platform acquired a CFTC-licensed exchange in late 2025 and launched its U.S. iOS app in December before removing its waitlist in May 2026. Kalshi, meanwhile, entered the tournament as FIFA's official prediction market partner.coindesk+1

Historic Rivalry, Historic Stakes

The winner advances to Sunday's final at MetLife Stadium in East Rutherford, New Jersey, against either France or Spain. For England, a victory would mean reaching the World Cup final for the first time since 1966. For Argentina, it would represent a chance to defend their 2022 title in what could be Messi's final World Cup match.rg