CFTC Proposes Rules to Limit Sports Prediction Market Contracts

The Commodity Futures Trading Commission has moved from observer to active regulator of sports prediction markets. In August 2026 the agency proposed rules that would bar platforms from offering certain sports-related event contracts — including those tied to player injuries and officiating outcomes — and separately warned operators to stop displaying contracts using American-style gambling odds.

Why this matters: Kalshi and Polymarket's US app operate under CFTC oversight as federally regulated exchanges, which has allowed them to offer sports event contracts in states where sports betting is illegal. The proposed rules represent the first substantive federal attempt to define what those platforms can and cannot list.

What the Proposed Rules Would Do

Three distinct regulatory threads are moving at once:

1. Contract-type restrictions

The proposal would prohibit event contracts on outcomes including officiating decisions and player injuries. Both categories raise obvious integrity concerns — a market on whether a specific player gets injured creates a financial interest in that outcome, and officiating markets invite the same problem from the other direction.

Notably, the proposal targets contract categories rather than sports contracts wholesale, which implies the CFTC is working toward a framework where sports event contracts persist in some regulated form rather than being eliminated.

2. Presentation and marketing

The warning about American-style odds addresses how contracts are displayed. Presenting a contract as "-140" rather than as a price in cents makes the product look and feel like a sportsbook. The CFTC's concern is framed around deceptive marketing — if a product is regulated as a financial instrument, it should be presented as one.

This is a smaller technical change with large practical effects. Odds-format display is a significant part of what makes prediction markets accessible to sports bettors rather than traders.

3. Conflicts of interest

Separately, the CFTC has proposed rules addressing companies that own both a prediction market exchange and a principal trading desk active on that exchange. The agency has described the structure as inherently problematic — an exchange operator trading against its own customers has an obvious conflict that traditional financial regulation does not permit.

The Legal Backdrop

The proposals arrive alongside unresolved litigation over whether states can regulate these products at all. A divided Third Circuit held that the CFTC has exclusive jurisdiction over sports-related event contracts — a ruling favorable to the platforms, but one that also concentrates all regulatory authority in the agency now writing restrictive rules.

Kalshi and the Polymarket US app are federally regulated and technically available in all 50 states plus Washington D.C. Several states have nevertheless taken action to ban prediction markets or specific contract categories, producing a patchwork the courts are still sorting out. Our coverage of the latest articles tracks how those cases develop.

Why Sports Contracts Dominate These Platforms

The commercial stakes are substantial. Sports-related trades have accounted for roughly 80% of Kalshi's total trading volume since July 2024. Prediction markets were conceived around elections, economic indicators, and policy outcomes — but sports is what generates volume, because sports has a large, engaged, price-sensitive audience that trades constantly.

That concentration is the vulnerability. Rules that meaningfully constrain sports contracts do not trim a business line; they hit the core of it.

The Regulated Sportsbook Perspective

Licensed sportsbook operators have been vocal throughout. Their argument is straightforward: they pay state licensing fees, state gaming taxes, and comply with state-level responsible gambling and advertising rules, while prediction markets offer functionally similar products nationwide without those obligations.

The counterargument from prediction market operators is that event contracts are financial instruments with genuine hedging use cases, and that federal commodities regulation is the appropriate framework. Congressional Democrats have separately urged the CFTC to act on both sports contracts and insider trading concerns.

For bettors, the practical question is simpler: regulated sportsbooks offer state-level consumer protections, formal dispute resolution, and responsible gambling tools that prediction markets are not required to provide. Our reviews of licensed operators including DraftKings and FanDuel cover what those protections look like in practice.

The Insider Trading Question

One issue running underneath the entire debate is information asymmetry. Traditional financial markets have well-developed insider trading law, built over decades, defining who owes a duty and what constitutes material non-public information. Sports event contracts have no equivalent framework.

Consider the obvious cases: a team's medical staff knows a starting quarterback's injury status hours before it is public. An equipment manager knows about an illness sweeping a locker room. Under commodities law, whether trading on that information is prohibited depends on legal duties that were never designed with sports in mind.

Regulated sportsbooks handle this through a different mechanism — integrity monitoring agreements with leagues, mandatory suspicious activity reporting, and contractual prohibitions on team and league personnel wagering on their own sport. Prediction markets, regulated as exchanges rather than as gambling operators, are not bound by that infrastructure. Closing the gap is one of the harder problems the CFTC now has to solve.

What Happens Next

Proposed rules enter a public comment period before finalization, which typically runs several months and often produces amendments. Operators, sports leagues, state regulators, and consumer groups will all file. Litigation over any final rule is close to certain.

The realistic near-term outcome is a narrower but legitimized sports prediction market — one that continues to operate federally, without injury and officiating contracts, presented in financial rather than gambling formats. That would be a meaningful commercial constraint but not an existential one.

Frequently Asked Questions

What did the CFTC propose in August 2026?

Rules that would bar prediction markets from offering certain sports event contracts, including those on player injuries and officiating outcomes, plus separate rules addressing exchange operator conflicts of interest.

Are Kalshi and Polymarket legal in my state?

Both operate under federal CFTC regulation and are technically available in all 50 states and D.C. Several states have taken action against them, and the litigation is ongoing — check current status for your jurisdiction.

Why did the CFTC object to American-style odds?

The agency views displaying contracts in gambling odds format as deceptive marketing that presents a regulated financial instrument as a sportsbook product.

How much of prediction market volume is sports?

Sports-related trades have made up roughly 80% of Kalshi's total trading volume since July 2024, which is why sports-focused rules carry outsized commercial impact.

When would these rules take effect?

Proposed rules require a public comment period before finalization, typically several months. Legal challenges to any final rule are widely expected.

Bottom Line

The CFTC is not shutting prediction markets down — it is defining the boundaries they will operate within. Expect a narrower sports contract offering, presented in financial rather than gambling formats, with the jurisdictional fight continuing in parallel.

Follow the regulatory story and compare licensed alternatives through our gambling guides at DeucesCracked.