A federal judge in Connecticut ruled on August 10, 2026, that Kalshi's sports-event contracts do not qualify as swaps under the Commodity Exchange Act (CEA) and that the CFTC lacks authority to preempt state gambling law in this area. One day later, the CFTC invoked emergency powers under Section...
"Congress did not intend for derivatives exchanges to be regulated under a patchwork of state gaming laws." — Mike Selig, Chairman, Commodity Futures Trading Commission
A federal judge in Connecticut ruled on August 10, 2026, that Kalshi's sports-event contracts do not qualify as swaps under the Commodity Exchange Act (CEA) and that the CFTC lacks authority to preempt state gambling law in this area. One day later, the CFTC invoked emergency powers under Section 8a(9) of the CEA to order Kalshi to continue operating nationwide. The contradiction between a federal court stripping the agency's authority and the agency simultaneously asserting that authority has created the most significant jurisdictional fracture in U.S. financial regulation since the SEC-CFTC turf wars of the 1980s.
At stake: a prediction market industry generating $178 billion in annualized trading volume as of April 2026, anchored by two platforms — Kalshi (valued at $40 billion) and Polymarket (targeting $20 billion) — that collectively process more notional value than several mid-tier U.S. equity exchanges. Forty-four state attorneys general submitted a joint letter on July 28, 2026, arguing the CFTC has no authority over sports prediction markets. The CFTC has sued nine states. Congress has introduced competing bills that would either codify or eliminate the agency's jurisdiction. The outcome will determine whether prediction markets are regulated as financial derivatives or as gambling — and which level of government controls a category growing at 32x year-over-year.
On August 10, 2026, U.S. District Judge Vernon D. Oliver denied Kalshi's motion for a preliminary injunction against the state of Connecticut, ruling that Kalshi failed to demonstrate its sports-event contracts qualify as swaps under the CEA. Judge Oliver wrote that "Kalshi's sports-event contracts fail to satisfy this portion of the statutory definition of a swap because they do not depend on whether an underlying sporting event occurs, fails to occur, or occurs to a particular extent. Instead, Kalshi's sports-event contracts depend on the event's outcomes or discrete in-game occurrences."
The distinction is narrow but consequential. Under the CEA, swaps must reference an "occurrence, extent of an occurrence, or contingency." Judge Oliver concluded that predicting the outcome of a baseball game — who wins, by how much — is functionally different from predicting whether the game occurs. The former, he ruled, resembles a wager. The latter resembles a derivative.
Connecticut is now the third federal district court to apply what legal scholars call the "elephants in mouseholes" doctrine to prediction markets, following Ohio (Judge Morrison) and Michigan (Judge Kumar). The doctrine, derived from a 2001 Supreme Court ruling, holds that Congress does not hide broad regulatory powers in vague statutory language.
According to testimony cited in the ruling, sports-event contracts represented 80% to 90% of both Kalshi's listed contracts and company revenue as of February 2026. On August 15, Judge Oliver denied Kalshi's emergency motion for an injunction pending its appeal to the Second Circuit.
On August 11 — one day after the Connecticut ruling — CFTC Chairman Mike Selig invoked the agency's emergency authority to order KalshiEX to continue operating nationwide. The trigger was a separate legal threat: New York Attorney General Letitia James had filed suit on July 31, 2026, seeking a temporary restraining order and $36 billion in damages against Kalshi.
The $36 billion damages figure derives from applying New York's 51% state sports betting tax rate to Kalshi's cumulative trading volume. For context, New York collected approximately $2.4 billion in sports betting tax revenue in fiscal year 2025.
Selig's statement was direct: "New York has no business regulating these interstate financial markets. These are financial exchanges that offer financial instruments and operate across state lines." The CFTC framed the emergency order as necessary to prevent New York from forcing Kalshi to "waste away under its iron curtain of state gaming laws before the courts get the chance to issue final rulings."
The emergency order creates a direct conflict with the Connecticut court's reasoning. One arm of the federal government has ruled these contracts are not swaps; another arm of the federal government is ordering the exchange to keep listing them as though they are.
The numbers illustrate why the fight is existential for both sides.
Kalshi:
Polymarket:
Industry-wide:
State gambling revenue at risk:
The state response has been coordinated and aggressive.
On July 28, 2026, attorneys general from 44 states submitted a joint comment letter to the CFTC, led by Ohio Attorney General Andy Wilson, arguing that sports prediction markets are gambling products subject to state regulation, not financial derivatives. The letter stated the CFTC's proposed rules would "drastically expand federal regulatory authority in an area of major economic and political consequence that States have traditionally regulated." Six states — Florida, Georgia, New Hampshire, Missouri, Texas, and one other — did not sign.
Individual enforcement actions are underway in multiple states:
The CFTC has responded by suing nine states — Arizona, Connecticut, Illinois, Kentucky, Minnesota, New Mexico, New York, Rhode Island, and Wisconsin — in an effort to establish federal preemption across multiple circuits.
The legal landscape is fractured across federal circuits, creating conditions for eventual Supreme Court intervention.
Favorable to Kalshi/CFTC preemption:
Unfavorable to Kalshi/CFTC preemption:
The CFTC has deliberately filed suits across four federal circuits, which commentators interpret as an effort to create or exploit a circuit split that forces the Supreme Court to resolve the question definitively. With the Third Circuit ruling one way and multiple district courts in the Second, Sixth, and Ninth Circuits ruling the other, that split is forming.
Congress is approaching the issue from opposite directions.
Restricting prediction markets:
Protecting prediction markets:
None of the bills have advanced out of committee. Legislative resolution before 2027 appears unlikely.
The jurisdictional question is ultimately about who captures the economic surplus generated by prediction market activity.
Under the state-gambling model, prediction markets would pay state licensing fees, state-level taxes (ranging from 15% to 51% of gross gaming revenue depending on state), and submit to state gaming commission oversight. The New York suit's $36 billion damages claim illustrates the fiscal stakes: it represents what the state claims it would have collected had Kalshi been subject to its 51% sports betting tax.
Under the federal-derivatives model, Kalshi operates as a CFTC-registered Designated Contract Market (DCM), paying federal registration fees but no state gambling taxes. Revenue flows to the exchange (via trading fees), to market makers providing liquidity, and to users capturing informational value from prediction accuracy.
The difference between these regimes is not theoretical. If prediction markets are reclassified as gambling in states representing 60-70% of U.S. population, Kalshi and Polymarket would either need to obtain state gaming licenses in each jurisdiction — a process that takes 12-24 months per state and carries ongoing compliance costs — or cease operating in those states. The 80-90% revenue dependency on sports contracts makes geographic restriction functionally equivalent to business termination.
For on-chain platforms like Polymarket, which already restricts U.S. users following its 2022 CFTC settlement, the question is whether state gambling enforcement extends to decentralized, blockchain-based settlement. Polymarket processes $7+ billion in monthly volume on Polygon, settling in USDC. No state has yet attempted to enforce gambling law against a smart contract, but Kentucky's suit naming Coinbase, Robinhood, and Webull as distribution partners suggests states are pursuing the access points rather than the protocol itself.
The prediction market jurisdictional conflict has no precedent in recent U.S. financial regulation. A federal agency is asserting exclusive authority over a product category that federal courts are simultaneously ruling falls outside that agency's statutory mandate. Forty-four states are rejecting the agency's claimed jurisdiction while the agency sues nine of them. Congress has introduced bills endorsing both positions and passed neither.
The financial stakes are concrete. An industry generating $178 billion in annualized volume and supporting platform valuations of $40 billion and $20 billion depends on whether its core product — sports-event contracts comprising 80-90% of revenue — is legally classified as a derivative or a bet. The distinction determines which regulator controls the market, which tax regime applies, and whether the platforms can operate across state lines.
Supreme Court intervention appears increasingly likely as the circuit split deepens. Until then, prediction markets operate in a regulatory superposition: simultaneously legal and illegal, depending on jurisdiction, court, and which federal agency is asked.