Plus500 sports event contracts were still a speculative bet on future demand when the broker added them to its US platform in early February 2026, according to Action Network. The 2026 World Cup has since generated the kind of numbers that validate the timing.
Polymarket’s flagship “World Cup Winner” market has drawn $4 billion in volume since launching in July 2025, making it the largest single market in the platform’s history and surpassing its 2024 US presidential election contract. Kalshi’s equivalent market has crossed $1 billion, with France priced at 34% and defending champions Argentina at 18% as the tournament moves into the round of 16.
June’s Prediction Market Surge: What the Numbers Show
The scale of June’s activity is hard to ignore. Prediction markets processed more than $50 billion across the month, up 75% from May, according to Artemis data. Kalshi alone accounted for roughly $33 billion of that total, including $7.4 billion in World Cup trades, which is more than its entire March Madness volume.
Polymarket’s World Cup activity reached $6.6 billion in June, compared with $138,000 during the 2022 tournament. Rothera, the Robinhood-backed venue, contributed around $2 billion.
The World Cup concentrates liquidity into a matter of weeks, so June’s figures reflect the event rather than any new structural floor for the industry. For firms that distribute these contracts, though, capturing those spikes is precisely the point.
How Plus500 Sports Event Contracts Sit Inside the Flow
Plus500 added Kalshi’s Commodity Futures Trading Commission (CFTC)-regulated sports contracts, covering NFL, NBA, MLB and other events, to its Plus500 Futures platform shortly before the tournament began. The broker acts as the retail access layer: contracts are listed and resolved on Kalshi, while Plus500 handles onboarding, the interface, and clearing through its Kalshi Klear membership.
Plus500 also clears for the FanDuel–CME Group joint venture, which operates as a non-clearing futures commission merchant to facilitate access to event-based contracts. That partnership unveiled the FanDuel Predicts app on 12 November 2025, with a planned December 2025 launch, offering trading on global benchmarks and economic indicators alongside sports outcome contracts in non-online sports betting states.
According to the Plus500 FY 2025 Investor Presentation, the company had also secured new clearing memberships with ICE Clear US and ICE Clear Europe by the end of 2025, adding to existing memberships with CME, Eurex, and MGEX. Customer segregated funds (cash held separately from the firm’s own money, protecting clients if the broker fails) exceeded $0.9 billion as of 31 December 2025, up 160% year-on-year, a sign of how quickly the US business has scaled.
Plus500 sports event contracts are therefore positioned at the centre of the largest liquidity event prediction markets have yet seen. Retail participation in Kalshi’s football contracts runs, in part, through exactly the infrastructure Plus500 built at the start of the year.
The regulatory backdrop adds a layer of complexity. The CFTC filed a lawsuit in federal court against the state of New Mexico after New Mexico sued Kalshi in state court, alleging its prediction market offerings amounted to unlawful online sports betting. The CFTC is seeking a declaratory judgment that federal law grants it exclusive authority to regulate event contracts and is requesting a permanent injunction to stop New Mexico enforcing state laws against CFTC registrants. A ruling in the CFTC’s favour would strengthen the legal footing of every firm distributing these contracts; an adverse outcome would create uncertainty across the sector.
Plus500 does not break out its prediction market revenue separately. Its US business generated about $35 million in quarterly revenue before the tournament began, up 45% year-on-year, driven by its non-OTC offering that includes futures and event contracts.
The demand side has now been confirmed at a scale few expected in February. What remains unknown is how much of that $50 billion-plus in June activity flowed through Plus500’s clearing position and converted into revenue. That figure will arrive with the broker’s next quarterly report, and it is the number investors should be watching.
