2026 FIFA World Cup boosts prediction market volumes
The 2026 FIFA World Cup has become a significant event for prediction market platforms, with trading volumes reaching unprecedented levels in June. Kalshi, one of the leading platforms, experienced a surge in notional volume, surpassing $31 billion compared to May’s total of $17.9 billion. This consistent high volume has been attributed to the soccer tournament that commenced on June 11.
Polymarket, another prominent prediction market platform, also witnessed a substantial increase in trading volume during June. The international event contract exchange set a new record high with notional trading exceeding $10.8 billion, reversing a downtrend seen in the previous months of April and May. Additionally, Polymarket’s U.S. platform saw a notable increase in notional volume, exceeding $3.5 billion in June compared to $1.77 billion in May.
As the excitement around the World Cup continues to grow, prediction market platforms have capitalized on the opportunity to attract more users. Rothera, a joint venture between Susquehanna International Group and Robinhood, saw $2 billion in notional trading volume in June, accounting for 7% of U.S. prediction market volume, according to Bank of America. The platform was launched in conjunction with Robinhood routing certain World Cup contracts to the platform.
To further engage users, platforms like Polymarket have introduced competitions and incentives related to the World Cup. Polymarket launched a competition offering up to $2 million for crafting a perfect World Cup knockout round bracket, while Kalshi emphasized trading the World Cup on its mobile platform. The heightened open interest on these platforms, reflecting the total number of active, unsettled contracts, has also seen a significant increase. Kalshi’s open interest now exceeds $1 billion, while Polymarket’s open interest is just under $400 million.
The surge in volume and interest surrounding the World Cup has put prediction market platforms to the test in terms of their ability to handle high volumes and maintain a level playing field for all investors. Asaf Meir, CEO at Solidus Labs, a market integrity company in partnership with Kalshi, highlighted the importance of platforms proving their reliability and maturity during such high-pressure events. Regulators and institutions are closely monitoring their performance to ensure the safety and integrity of these platforms.
In conclusion, the 2026 FIFA World Cup has not only captured the attention of football fans worldwide but has also demonstrated the potential of prediction market platforms to handle large-scale events and maintain market integrity. As the tournament progresses, these platforms will continue to play a significant role in shaping the future of prediction markets.



