Earlier this week, CNBC reported that a source within Polymarket has revealed that the prediction market exchange has achieved $1.8 billion in annualized revenue. According to the report, the platform’s income has nearly doubled since its May 2026 domestic launch within the United States, when the yearly rate was approximately $1.0 billion.
In the United States alone, Polymarket US has more than tripled its notional trading volume for prediction market contracts since June of this year. Its international exchange (which isn’t regulated within the US) is still a fundamental driver in the company’s total revenue growth.
A large portion of Polymarket’s growth can be attributed to the 2026 World Cup and the 2026 NFL regular season. Spain’s July 19th 1-0 victory over Argentina in extra time was the culmination of a meteoric global event that spanned three host countries and several weeks of marquee soccer matchups. Ultimately, the non-US platform attracted more than $4.3 billion in notional trading volume on which team would win the World Cup.
The NFL regular season has also provided a meaningful boost to Polymarket sports trading, both inside and outside of the United States. Furthermore, NFL “combo” trades have more than made up for any lost volume related to digital-asset trading during the 2026 calendar year. Each week, the Polymarket US legal prediction market is posting billions in trading volume according to seven-day averages published by TickerTracker.
College football games and the MLB World Series have likewise impacted trader interest in recent weeks, with football becoming more of a focus now that the Milwaukee Brewers have captured their first World Series championship.
Prediction market valuations have been “through the roof” in the second half of 2026. Back in August, media outlets reported that Polymarket was in talks to secure a $1 billion funding round based on a valuation in excess of $20 billion.
Although the details are still being negotiated and the deal has yet to be finalized, prediction market exchanges’ ability to attract blockbuster investment has been undeterred by state and tribal legal challenges to sports contracts.
Kalshi, a direct rival of Polymarket, has already secured $1 billion in its own funding based on a $40 billion valuation – a figure that tops some of the most high-profile sportsbook and online casino conglomerates.
Trading on sports outcomes dwarfs all other categories combined for prediction markets that operate nationwide under the CFTC. While the 2026 midterm elections certainly garnered a massive amount of mainstream attention, even the most contentious political races fail to compare to the volume achieved for the most popular sports contests.
Prediction markets’ reliance on sports contracts could become a huge vulnerability for the exchanges if legal challenges, brought forth by state and tribal gaming authorities, are successful. At the moment, circuit courts have split in their opinions on how sports contracts should be categorized. This sets up a potential Supreme Court ruling on sports event contracts at some point over the next two years.
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