The Commodity Futures Trading Commission has told regulated prediction market platforms to stop using American-style “moneyline” betting odds, a move that puts fresh pressure on an industry already fighting to define who gets to police it. According to Bloomberg, the CFTC prediction markets warning arrived in letters sent to the agency’s regulated entities, instructing them to comply with federal law and avoid “deceptive” practices when listing, advertising, or soliciting bets. The letter, dated August 7, 2026, lands at a moment when the CFTC is simultaneously trying to lock down exclusive federal jurisdiction over an industry that has ballooned into a multibillion-dollar business.
Summary
Key takeaways
- The CFTC warned regulated prediction market platforms against using American-style moneyline betting odds, citing “deceptive” practices concerns.
- A study cited by the agency found that moneyline-style odds encourage more risk-taking than the cents-based pricing typical of prediction markets.
- Kalshi confirmed it will comply with the letter by its deadline, calling itself a “federally regulated exchange.”
- CFTC Chair Michael Selig has spent the past year asserting exclusive federal authority over prediction markets, including lawsuits against several states.
- The agency is pursuing formal rulemaking to cement that authority even as states argue local gaming laws still apply.
CFTC’s Warning on American-Style Moneyline Betting Odds
The core of the CFTC’s message is simple: platforms need to stop presenting bets the way sportsbooks do, and they need to do it before running afoul of federal deception rules. Bloomberg reported that the letters told regulated entities to comply with the law and drop moneyline-style formatting from how they list, advertise, or solicit contracts.
Definition and Contrast of Betting Odds Formats
American-style gambling odds, also called moneyline odds, show how much a bettor stands to win on a $100 bet, marked with a plus or minus sign. A bet at “-150,” for instance, signals a favorite, while “+150” flags an underdog with bigger potential payout. Prediction markets built for regulatory approval, by contrast, price contracts in cents that map directly onto implied probability. A contract trading at 50¢ implies roughly even odds. That cents-based structure converts to American odds through straightforward math: anything under 50¢ becomes a positive number, anything over 50¢ becomes negative. The distinction matters because the CFTC oversees exchange-style contracts, not sportsbook-style wagers, and blending the two formats blurs a line regulators are trying hard to keep bright.
Study Linking Moneyline Odds to Riskier Betting
The CFTC didn’t just object on aesthetic grounds. Its letter cited a study finding that American-style wagers push people toward more risk-taking in sports betting compared with probability-based pricing, according to Bloomberg’s reporting. That research gives the agency a behavioral rationale for treating moneyline formatting as more than a cosmetic issue — it frames the odds display itself as a potential driver of the kind of speculative, high-stakes wagering the CFTC says its deceptive-practices rules are meant to prevent.
Regulatory Authority and Enforcement Actions
Behind the odds-formatting warning sits a bigger fight over who actually regulates this industry. The CFTC’s position, pushed consistently by Chair Michael Selig, is that the agency holds exclusive federal jurisdiction over prediction markets — full stop.
CFTC Chair Michael Selig’s Jurisdiction Claims and Legal Actions
Over the past year, Selig has maintained that stance aggressively enough to sue several states that tried to assert their own authority over prediction platforms. That’s not a minor procedural dispute. States argue that platforms offering sports-related contracts are effectively running gambling operations and should fall under local gaming and gambling laws. The CFTC’s counter is that these are federally regulated derivatives markets, no different in principle from other exchange-traded contracts it already oversees. This is exactly why the CFTC prediction markets warning on odds formatting reads as more than a compliance footnote — it’s the agency reinforcing its claim to sole regulatory ownership of the space, one letter at a time.
Rulemaking Efforts Amid State Objections
Selig has also launched a formal rulemaking effort to codify that jurisdiction, arguing the CFTC’s statutory authority is broad enough to cover the industry regardless of state gaming statutes. States haven’t backed down, and the tension shows no sign of resolving quickly. Why does this matter beyond Washington’s regulatory turf war? Because the outcome determines whether prediction markets operate under one federal rulebook nationwide or face a patchwork of state-by-state restrictions that could reshape how platforms design contracts, advertise odds, and expand into new states.
Impact on Prediction Market Platforms and Responses
For now, at least one major platform is falling in line without a fight. A Kalshi spokesperson confirmed the exchange follows CFTC guidance directly, stating: “As a federally regulated exchange, Kalshi follows CFTC guidance and will comply with the letter by its deadline.”
Kalshi’s Compliance with CFTC Guidance
That compliance signal is notable given how much is riding on the relationship between platforms and their federal regulator. Kalshi’s willingness to fall in line supports the broader narrative that leading prediction markets would rather operate inside CFTC oversight than risk a messier, multi-state regulatory environment.
Market Growth and Stakeholder Positions
That preference isn’t hard to understand. Platforms like Polymarket and Kalshi have grown into multibillion-dollar businesses over a short span, and both have publicly backed CFTC oversight of their operations rather than a state-by-state model. A single federal regulator, even one issuing pointed warnings about betting odds formatting and sports betting regulation, offers more predictability than dozens of separate state gaming frameworks. Not everyone agrees that federal oversight alone is sufficient, though. Senators and tribal gaming regulators have started pushing for legislative language that would preserve states’ authority over sports betting and keep prediction markets from encroaching on that jurisdiction — a sign that Selig’s rulemaking push and legal victories haven’t settled the underlying question of federal versus state control.
The clash over Kalshi CFTC compliance and American-style moneyline odds is really a proxy fight for something bigger: whether prediction markets end up regulated like financial exchanges or treated, at least in part, like sports betting operations subject to state gambling law. That answer will shape advertising rules, product design, and market access for years to come.
FAQ
What are American-style moneyline betting odds?
They show potential winnings on a $100 bet using plus or minus signs to indicate payout, unlike prediction markets that use cents-based prices tied directly to implied probability.
Why did the CFTC warn prediction market platforms against using American-style moneyline odds?
Because a study cited by the CFTC found that moneyline odds encourage more risk-taking in sports betting, which the regulator views as potentially deceptive when applied to prediction market contracts.
How is the CFTC enforcing its authority over prediction markets?
The CFTC is sending letters warning regulated entities, pursuing rulemaking to clarify its authority, and has sued states to defend what it calls exclusive federal jurisdiction over the industry.
Have any prediction market platforms responded to the CFTC’s warning?
Yes. Kalshi confirmed it follows CFTC guidance and will comply with the letter by its stated deadline.
Article produced with the assistance of artificial intelligence and reviewed by the editorial team.
