The 2026 FIFA World Cup round of 16 drives record crypto prediction market volumes, with Kalshi hitting $30B and Polymarket $10.8B in June trading activity.

Among the three, Kalshi saw the largest month-over-month increase in volume, growing 87.4% to $31.5 billion from $16.81 billion.

FIFA World Cup 2026 Round of 16 matchups are set. Kraken's historic crypto sponsorship and booming prediction markets make the knockout stage a must-watch