Six Prediction Markets Targeted in Missouri Crackdown

Prediction Markets Industry News Archives |
Written By Jon Young | Published at September 22, 2026
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Missouri has issued cease-and-desist letters to six prediction market exchanges

Missouri is the latest state to take on the prediction markets in the latest battle over “unlawful sports wagering”.

Missouri Attorney General Catherine Hanaway instructed her office to issue cease-and-desist letters to six prediction market exchanges, following the likes of Connecticut and New Jersey this year.

The platforms targeted include Robinhood and heavy hitters like Polymarket and Kalshi. As with other states that have taken a similar path, the issue centers around facilitating event contracts that “constitute unlicensed sports wagering” under the current state laws.

AG: Prediction Markets ‘Must Be Licensed’ by Missouri

Hanaway’s office posted the cease-and-desist letters this week, highlighting the state’s fledgling regulated sports betting market.

Companies like Polymarket, she said, “cannot repackage sports bets as ‘event contracts’to avoid Missouri law”.

Missouri has a relatively new sports betting industry, which was only legalized in 2024. The market launched on Dec. 1, a year later.

The crux is not only that sportsbooks must be licensed, but also that they pay taxes in Missouri. No prediction market exchange is currently liable for state taxes.

Missouri vs Prediction Markets: The Key Flashpoints

Swaps vs Sports Betting

The ongoing argument in courts comes down to what sports event contracts actually are. Are they fixed bets, or are they “swaps” that can be traded in and out?

Prediction markets argue that their platforms are similar to derivatives, where traders can exchange contracts with one another over time until the contracts resolve. That’s different from a sportsbook, where gamblers simply bet against the house.

However, some state regulators say that sports contracts, in particular, are too close to betting markets. The past year has seen a huge rise in sports-like “events contracts” on individual games, outright tournament winners, and even player props.

As one regulator put it, “if it walks like a duck and quacks like a duck…”

Some states have successfully convinced federal courts that the law is on their side.

Last month, the Ninth Circuit Court of Appeals ruled that states like Nevada have the power to regulate prediction markets.

Circuit Judge Ryan Nelson argued that Kalshi couldn’t show that the Commodity Exchanges Act, which prediction market exchanges operate under, pre-empts state gambling rules.

Some Operators Already Complying

Some prediction market operators are already beginning to drop their sports contracts. Robinhood ditched its sports event contracts in Michigan this month

“We’re pleased,” the MGCB’s Henry Williams said, “Robinhood has agreed to step back from offering these unregulated products while the courts continue to sort out the broader legal questions.”

The “sorting out” of the broader legal questions is at the crux of the ongoing confusion over who regulates what.

The platforms say they are regulated under the Commodity Exchange Act (CEA) and by the Commodity Futures Trading Commission (CFTC).

States with existing sports betting frameworks are crying foul, arguing that their gaming commissions have jurisdiction.

Connecticut sued Kalshi in August, saying that exchanges are “not magically shielded by federal law”. Kalshi responded by countersuing.

Earlier in March, an Ohio judge ruled that Kalshi must follow the state’s sports betting laws.

What seems certain is that the farcical legal situation is set to be resolved in the U.S. Supreme Court. The court is likely to rule on how prediction markets are licensed sometime next year. By the end of 2027, exchanges and regulators alike may know whether their ‘Yes’ or ‘No’ contracts have been resolved.

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