Polymarket hit $1 billion in revenue and now 20 states want to shut it down

A prediction market that went from zero revenue to a billion dollar run rate in six months is signing deals with major sports leagues while state attorneys general line up to call it illegal gambling.

The sports league playbook

The revenue numbers tell only part of the story. What changed the industry in 2026 is who decided to stand next to it.

On March 19, Major League Baseball named Polymarket its exclusive prediction market partner in a multiyear deal reported at $150 million to $300 million over three years. The agreement grants Polymarket exclusive access to official league data and the right to use MLB team logos and marks. No other prediction market platform can operate with MLB branding. Under the terms, MLB and Polymarket will coordinate to restrict markets that present an integrity risk, specifically excluding individual pitches, manager decisions, and umpire performance from the platform.

Commissioner Rob Manfred signed a memorandum of understanding directly with the CFTC and its chairman, Michael Selig. It was the first such agreement between the regulator and a major American sports league. The MOU stipulates that the two entities will share information and regularly discuss issues that may affect game integrity. Manfred had previously stated that formal prediction market deals would “aid in overall game integrity.”

The timing carried an irony that the league did not address publicly. Less than a year earlier, MLB had issued a warning to players characterizing prediction market use as a violation of its sports betting policies. The league reversed that position through the Polymarket partnership without acknowledging the contradiction.

MLB was not the first league to move. The NHL, MLS, and UFC had already signed official prediction market partnerships. But the MLB deal was the largest in dollar terms and the first to include a direct regulatory agreement with the CFTC. It set the template that the ATP Tour would follow months later.

On Aug. 3, 2026, Polymarket became the ATP Tour official prediction market provider under an agreement with Tennis Data Innovations. The deal covers 20,000 ATP Tour and ATP Challenger Tour matches per season, with rights extending across qualifying and the main draw. Registered U.S. users can watch relevant matches directly through the prediction market product, with official ATP data and odds supplied through Sportradar.

Then on Aug. 27, Sportradar and Polymarket announced a significant expansion of their data partnership. The revised agreement covers more than 20 global sports leagues and competitions, supporting approximately 300,000 matches each year. The coverage now includes the Bundesliga, Euroleague Basketball, the Chinese Basketball Association, the National Basketball League, tennis Grand Slams, and UTR Pro events, in addition to the previously announced ATP Tour, MLB, NHL, MLS, and UFC partnerships.

Sportradar CEO Carsten Koerl described the deal as cementing the company’s role as “the foundational infrastructure powering this ecosystem.” Polymarket president of sports business development Ari Borod called it “unprecedented scale.”

The money behind the platform

The sports partnerships reflect institutional confidence that extends beyond media deals. Polymarket has attracted capital at a pace that compresses what usually takes a decade of corporate development into months.

In October 2025, Intercontinental Exchange, the parent company of the New York Stock Exchange, took a $2 billion stake in Polymarket at a $9 billion valuation. The investment went beyond cash. ICE became a global distributor of Polymarket event-driven data, providing its customers with sentiment indicators on topics of market relevance. The two companies agreed to partner on future tokenization initiatives.

By March 2026, Polymarket had closed another round at a $15 billion valuation, raising $600 million. The CFTC had finalized its approval for Polymarket to operate as a designated contract market in the United States. The platform launched with a waitlist in December 2025 and lifted restrictions for general access in May 2026.

As of early August 2026, Polymarket was in talks to raise an additional $1 billion at a valuation above $20 billion. Its competitor Kalshi was valued at $22 billion in May and was pursuing additional capital that would price the company at $40 billion.

CEO Shayne Coplan, a 27-year-old college dropout who founded the company in 2020, has described the platform as an information market rather than a betting venue. He has said prediction markets let people “put your money where your mouth is” when they disagree with consensus, and his long-term vision is to expand beyond headline events into a broader almanac covering a wider range of markets. That vision now includes a partnership with Nasdaq to launch prediction markets tied to private-company valuations, IPO timing, and secondary trading.

NEW: CFTC Chairman Mike Selig says the agency stands ready to address changing landscapes in crypto. The CFTC aims to keep America as the crypto capital by bringing novel derivatives under its regulatory framework pic.twitter.com/Enj6y5H39t

— crypto.news (@cryptodotnews) June 13, 2026

Twenty states and a letter from 44

While leagues and exchanges were signing deals, state regulators were filing lawsuits. Twenty states are locked in active litigation over whether prediction market contracts are subject to state laws governing sports betting.

The legal offensive did not begin as a coordinated campaign. It started with individual actions. Tennessee issued cease-and-desist letters to Polymarket and other platforms in January 2026. Arizona filed what became the first criminal charges against a prediction market platform in the U.S. when it targeted Kalshi for operating an illegal gambling operation. Nevada filed a civil enforcement action arguing that prediction markets constitute illegal sports gambling under state law, forcing both Polymarket and Kalshi to halt operations in the state.

Rhode Island sued Kalshi and Polymarket, arguing they operate as illegal gaming platforms. Massachusetts prompted a preemptive federal lawsuit from Polymarket, which sought to prevent state regulators from blocking its operations. Wisconsin, Michigan, Washington, Connecticut, Illinois, New Jersey, and New York all filed their own actions, each arguing some variation of the same claim: prediction markets look like sports betting, they act like sports betting, and they should be regulated as sports betting.

The jurisdictional fight escalated when 44 state attorneys general signed a letter to the CFTC in late July 2026. Only attorneys general from Florida, Georgia, New Hampshire, Missouri, and Texas declined to sign. The letter told the commission it has no authority to regulate sports-related event contracts on prediction market platforms. The states described the platforms as a “new form of casino” preying on young people and accused them of dodging regulations and failing to pay state taxes. The Tax Foundation, a nonpartisan research group, estimated the lost state tax revenue at $2 billion per year.

The gambling industry itself has been a driving force behind the state actions. Traditional sportsbooks and casinos view prediction markets as a competitive threat that operates without gaming licenses, without state tax obligations, and without the regulatory compliance costs that licensed operators bear. Their lobbying has pressed state officials to treat prediction markets as unauthorized competitors rather than novel financial products.

The CFTC caught in between

The Commodity Futures Trading Commission has taken the position that event contracts traded on its registered exchanges are financial derivatives, not gambling, and that federal law gives it exclusive jurisdiction. CFTC Chairman Michael Selig has described prediction markets as “the next crypto,” comparing them to the early expansion of blockchain products and stressing the need to maintain CFTC oversight.

The agency has backed that position with lawsuits of its own. The CFTC sued Arizona, Connecticut, and Illinois in April 2026, then added New York, Wisconsin, Minnesota, and Rhode Island in subsequent filings. In total, the commission has sued nine states to defend what it sees as its exclusive right to regulate the platforms. In each case, the CFTC sought a declaratory judgment that federal law grants it exclusive authority over event contracts and requested permanent injunctions preventing states from enforcing their gambling laws against registered prediction market operators.

The most dramatic moment came on Aug. 11, when the CFTC invoked emergency powers for only the seventh time in its history. New York Attorney General Letitia James had filed a lawsuit against KalshiEX seeking $36 billion in damages, and the CFTC used Section 8a(9) of the Commodity Exchange Act to order Kalshi to continue operating nationwide.

But the agency is also trying to build a regulatory framework that might address state concerns. On June 10, the CFTC proposed amendments to Regulation 40.11 that would create a three-step test for event contracts: whether a product is an event contract, whether it involves a listed activity, and whether trading would conflict with the public interest. Sports contracts tied to player injuries and markets linked to wars, terrorism, political violence, or assassinations would face stricter examination. The CFTC also instructed regulated platforms to stop displaying contracts using American-style gambling odds in August, a concession to the argument that the presentation itself signals gambling rather than derivatives trading.

The commission is caught between two constituencies. It wants to support an industry that generates revenue, attracts institutional capital, and sits within its regulatory mandate. But it cannot ignore 44 state attorneys general telling it to back off, a federal appeals court ruling against its position, and a growing body of evidence that some prediction market products look indistinguishable from the sports bets available at any licensed sportsbook.

LATEST: Polymarket gives 49% chance that the Clarity Act will be signed into law in 2026 pic.twitter.com/Tao4H8XgJz

— crypto.news (@cryptodotnews) April 19, 2026

The Ninth Circuit ruling changes the math

On Aug. 28, 2026, a three-judge panel of the Ninth Circuit Court of Appeals ruled unanimously that states can regulate prediction markets as gambling. The case originated from Nevada, where regulators had moved to ban Kalshi. The panel, composed entirely of Trump-appointed judges, wrote that “the substance of the sports event contracts offered on Kalshi’s exchange is sports gambling.”

The ruling is the largest courtroom victory to date for the states in their campaign against prediction markets. It directly contradicts an earlier Third Circuit decision that had sided with prediction platforms, halting New Jersey from applying its state gaming laws against the companies. The circuit split creates the conditions for the Supreme Court to take the case. Legal experts widely expect a petition for certiorari within months.

The Ninth Circuit opinion carries weight beyond its immediate jurisdiction. It validates the core argument that states have been making since the beginning of the litigation wave: that wrapping a sports bet in the language of derivatives does not change what it is. The panel rejected the CFTC preemption argument, finding that the Commodity Exchange Act does not strip states of their traditional authority to regulate gambling within their borders.

For Polymarket and its competitors, the ruling introduces a scenario in which they would need gaming licenses in every state where they operate. That compliance burden would be prohibitive for a blockchain-based platform designed to operate on a single set of federal rules. It would also expose the platforms to state tax obligations that their current structure avoids entirely.

The integrity question nobody wants to answer

The state lawsuits focus on jurisdiction and taxation. But there is a third issue that neither side has fully addressed: market integrity.

A Bloomberg analysis found that approximately $200 million in Polymarket trades during the first half of 2026 showed characteristics associated with potential insider activity. Much of the suspicious trading was concentrated in geopolitical prediction markets related to Iran and Venezuela. Polymarket referred approximately 100 wallets to law enforcement authorities in response.

The New York City Council opened a separate investigation into the marketing practices of Polymarket, Kalshi, Coinbase, and Gemini Titan after a Wall Street Journal report found that roughly 70% of promotional videos involved simulated trades presented as real activity. The promotional content had generated over 140 million views across social platforms.

Bank of America issued a research note warning of “credit-fueled gambling,” arguing that the blend of prediction markets and easy access to borrowed funds could mirror the dynamics that produced losses in earlier speculative cycles.

These issues complicate the narrative that prediction markets are simply a more efficient form of price discovery. The platforms argue they provide the wisdom of crowds, real-time consensus on future events backed by real money. Critics argue that the crowds include insiders trading on nonpublic information, influencers promoting fake trades, and retail users accessing leveraged positions they do not fully understand.

The law nobody updated

The legal framework governing this collision was not built for blockchain-based prediction markets. State gambling laws were written decades before anyone imagined a platform where users could trade event contracts on whether Bitcoin would close up or down in the next five minutes. The Commodity Exchange Act was designed to regulate agricultural futures, not sports outcome derivatives.

The CFTC has tried to stretch its statutory authority to cover prediction markets by classifying event contracts as swaps, a category of derivative the commission regulates under the 2010 Dodd-Frank Act. But former CFTC and SEC Chairman Gary Gensler has publicly argued that the agency is not authorized under Dodd-Frank to regulate prediction markets as they currently operate. His position suggests that even the federal regulatory framework may need congressional action to hold up.

The CLARITY Act, which would have provided clearer regulatory authority for digital asset markets, has seen its odds collapse on Polymarket from 82% to 16% over the course of 2026. Congress has shown little appetite for addressing the jurisdictional gap, leaving courts to sort out a regulatory question that was never designed to be resolved through litigation.

Meanwhile, the industry continues to grow. Prediction markets processed more than $50 billion in volume during the World Cup alone, exceeding traditional sportsbooks. Five-minute crypto markets, where users bet on whether a single candlestick will close up or down, now account for more than half of trading volume on both Polymarket and Kalshi. The products are getting shorter, faster, and harder to distinguish from pure gambling.

The question is whether the law will catch up before the next billion. Every month that passes without a resolution adds volume, adds users, and adds complexity to the eventual reckoning. Prediction market platforms are building infrastructure at a pace that assumes federal preemption will hold. If it does not, the unwinding will be expensive, disruptive, and without precedent in American financial regulation.

What to watch

Disclaimer: This article is for informational purposes only and does not constitute financial advice. Always do your own research before making investment decisions. Information is accurate as of Aug. 31, 2026.