Polymarket Just Hit 1 Billion USD in Revenue — and 20 States Are in Court Trying to Shut It Down

Prediction market platform Polymarket has crossed 1 billion USD in annualized revenue — and in the same season, twenty U.S. states are actively suing to shut sports event contracts down. The collision between one of crypto’s fastest-growing businesses and America’s state gambling regulators is now headed toward what many expect to be a Supreme Court showdown.

By Maria Rodriguez | September 1, 2026

Prediction markets let people buy and sell contracts on real-world outcomes — election results, sports scores, economic data releases. Supporters call them information markets that reveal what crowds genuinely believe. State regulators call them something else entirely: unlicensed sportsbooks. On Aug. 28, 2026, the Ninth Circuit Court of Appeals ruled that states can regulate prediction markets as gambling, a decision that escalated a fight over who gets to police the industry — and it landed while Polymarket’s business is booming like almost nothing else in crypto.

The Hook: A Billion-Dollar Business Built in Six Months

Polymarket’s revenue did not exist before January 2026, according to a crypto.news investigation. The platform introduced taker fees on trades, lifted its U.S. waitlist for general access in May 2026, and by late June had crossed 1 billion USD in annualized revenue. The growth points:

• MLB deal — In March, Major League Baseball named Polymarket its exclusive prediction market partner in a multiyear agreement reported at 150 to 300 million USD over three years, with official league data and team logos
• ATP Tour — On Aug. 3, Polymarket became the ATP Tour’s official prediction market provider, covering 20,000 professional tennis matches per season
• Sportradar expansion — On Aug. 27, a widened data partnership extended coverage to roughly 300,000 matches per year across more than 20 leagues
• Rising valuation — Intercontinental Exchange, the New York Stock Exchange’s parent, took a 2 billion USD stake at a 9 billion USD valuation in October 2025; Polymarket is now reportedly seeking to raise 1 billion USD at a valuation above 20 billion USD

Notably, baseball’s own regulator signed the template. MLB Commissioner Rob Manfred signed a memorandum of understanding directly with the CFTC — the first such agreement between the derivatives regulator and a major American sports league — committing both sides to share information on game-integrity risks. Less than a year earlier, MLB had warned its own players that using prediction markets violated league betting policies. The league never publicly addressed the reversal.

The Core Conflict: Twenty States, Forty-Four Attorneys General, One Regulator

While leagues were signing deals, state regulators were filing lawsuits. Twenty states are now in active litigation arguing that sports event contracts are illegal gambling under state law. The campaign began piecemeal: Tennessee sent cease-and-desist letters in January. Arizona filed the first criminal charges against a prediction market platform, targeting Polymarket’s rival Kalshi. Nevada’s civil enforcement action forced both platforms to halt operations in the state. Rhode Island, Massachusetts, Wisconsin, Michigan, Washington, Connecticut, Illinois, New Jersey and New York each filed their own variations of the same argument — that these products look like sports betting, act like sports betting, and should be regulated as sports betting.

In late July, the campaign went collective. Forty-four state attorneys general signed a letter to the CFTC declaring that the commission has no authority over sports-related event contracts, with only Florida, Georgia, New Hampshire, Missouri and Texas declining to sign. The states described the platforms as a “new form of casino” preying on young people and dodging state taxes. The Tax Foundation, a nonpartisan research group, estimated the platforms cost states about 2 billion USD per year in lost tax revenue.

Behind much of the state pressure sits the traditional gambling industry itself. Licensed sportsbooks and casinos view prediction markets as competitors that operate without gaming licenses, without state tax obligations, and without the compliance costs licensed operators bear — and their lobbying has pushed officials to treat the platforms as unlicensed rivals rather than financial products.

The CFTC Fights Back — With Emergency Powers

The Commodity Futures Trading Commission has taken the opposite position: event contracts traded on its registered exchanges are financial derivatives, not gambling, and federal law gives the commission exclusive jurisdiction. Chairman Michael Selig has called prediction markets “the next crypto.”

The agency has not just talked. It sued Arizona, Connecticut and Illinois in April, then added New York, Wisconsin, Minnesota and Rhode Island in later filings — nine states in total — seeking court declarations that federal law preempts state gambling statutes. The most dramatic moment came on Aug. 11, when New York Attorney General Letitia James sued Kalshi seeking 36 billion USD in damages and the CFTC invoked its emergency powers for only the seventh time in its history, ordering the platform to keep operating nationwide.

Then came the setback. On Aug. 28, the Ninth Circuit ruled that states can regulate prediction markets as gambling, rejecting the argument that federal law locks states out entirely. Legal observers widely expect the issue — which splits federal authority against state police powers — to reach the Supreme Court.

What This Means for You

If you trade on Polymarket, Kalshi or similar platforms, the practical stakes are immediate. Depending on your state, access to sports-related markets could be restricted or shut off while litigation plays out — as Nevada residents have already experienced. If the Ninth Circuit’s reading ultimately wins nationwide, platforms would face a patchwork of fifty different state gambling regimes, likely shrinking product offerings and pushing some activity offshore.

For crypto investors more broadly, the fight is a preview of the industry’s next regulatory battlefield. The question that defined the last cycle — is this token a security? — is being replaced by a new one: is this contract a trade or a bet? How the courts answer it will shape what products American users are allowed to touch for years.

The Verdict

Polymarket now sits at a strange intersection: billion-dollar revenue, partnerships with Major League Baseball and professional tennis, backing from the New York Stock Exchange’s parent — and active litigation from twenty states calling the whole thing an illegal casino. The Ninth Circuit’s Aug. 28 decision gave the states their biggest win yet. Until the Supreme Court or Congress draws a clear line, the industry will keep growing in some states and going dark in others. Treat any prediction-market allocation in your portfolio as regulatory roulette until that line is drawn.

The cryptocurrency market remains highly volatile. This article is for informational purposes only and does not constitute financial advice.