CFTC tells event contract venues to stop showing bookmaker odds

What happened

The Commodity Futures Trading Commission said on 7 August that its Division of Market Oversight and its Market Participants Division had written to CFTC-regulated entities and their affiliates about misleading or deceptive practices in the marketing of event contracts. The letter, signed by DJ Hennes, Director of the Market Participants Division and Acting Director of the Division of Market Oversight, reminds recipients of the prohibition at 7 USC 9, which makes it unlawful to use 'any manipulative or deceptive device or contrivance' in connection with a swap, and of Commission Regulation 180.1, which bars making 'any untrue or misleading statement of a material fact'. It then states the specific concern: staff is troubled by reports that 'some CFTC-regulated products are being marketed not in nominal or percentage terms that reflect market pricing, but in the "American odds" format used by casino gambling bookmakers, in contravention of these rules'. Displaying derivatives prices in bookmaker odds, the letter says, 'is likely to mislead market participants about the nature of the transaction into which they are entering and may deprive users of access to indicia of market depth and pricing impact', and confusion between the two products 'could be exploited to drive participants into higher-margin, non-market-priced bookmaking products'. The letter reaches past the exchanges: designated contract markets are told to ensure that 'their intermediary market participants, affiliates, and partners do the same', and every recipient is asked to review its pricing displays and marketing material and to confirm receipt by 31 August 2026, introducing brokers and futures commission merchants to one mailbox and designated contract markets to another. The Commission's general counsel, its Director of Enforcement and two officers of the National Futures Association are copied.

Why it matters

The authority the letter runs on is the swap. Both 7 USC 9(1) and Regulation 180.1 bite on conduct 'in connection with any swap', and on 6 August a federal judge in Detroit held that Coinbase's sports event contracts are probably not swaps under the Commodity Exchange Act, in the order this desk read in full. So the Commission is regulating how a product is presented four days after a court declined to accept the classification that gives it the power to do so. The letter is drafted as though that were anticipated: it calls them 'event contract derivative products' throughout and adds authorities that do not depend on the swap definition at all, citing 17 CFR 38.401(b) on the accuracy of the information a designated contract market provides and Core Principle 12, the statutory duty to protect market participants from abusive, noncompetitive or unfair actions. What these venues may sell, and how they may show it, now rests on two theories of what they are. The substantive claim underneath is that the display is not decoration. 'Prediction markets leverage transparency to aggregate the collective knowledge of its user base, serving important price- and information-discovery functions', the letter says, and a contract quoted at 10 cents states a 10 per cent chance while the same position quoted at +900 states a payout and hides the book behind it. The letter's footnote grounds that in a Behavioural Insights Team study of 4 August 2025, 'American odds lead to riskier sports betting', and observes that in book-based gambling 'users must accept the odds set by bookmakers who are financially interested in the outcome of every wager'. The commercial stake is the funnel: the venues have grown by making a derivative feel like a bet, and the regulator is now telling them that the feeling is the problem.

What is not settled

No enforcement action accompanies the letter and it creates no new rule, so what happens to a venue that keeps its plus-minus display after 31 August is unstated. The release does not date the letter, and the file the Commission publishes it under is named for 30 July, which would put a week between signature and announcement. Compliance is uneven: Bettors Insider reports a Kalshi spokesperson confirming the exchange will comply by the deadline and saying it 'follows CFTC guidance', while Polymarket did not respond to requests for comment and DraftKings Predictions was among platforms still showing run lines, moneylines and over/unders in plus-minus form on the Friday. The same report says a Michigan judge ruled that sports prediction markets fall outside the Commission's regulatory umbrella entirely, which goes further than the order does: it held the contracts are probably not swaps and that federal law does not displace Michigan's gambling statute, not that the Commission lacks authority over its own registrants. Bloomberg had the letter first, according to all three reports cited here, and its account could not be read at this desk. Neither of the two crypto trade publications that covered the Michigan order carried this letter at all.