One case, nine states, the entire industry — and the rules meant to decide it haven't been published yet.
Kalshi vs. Nevada heads to en banc — with the CFTC rulebook still unwritten
The short answer
The Ninth Circuit agreed to rehear Kalshi v. Nevada en banc — the case that decides whether sports event contracts are derivatives or gambling across nine western states. Both sides are now arguing procedure while the CFTC's answer sits in OIRA review.
In this article
The Ninth Circuit's decision to rehear Kalshi v. Nevada en banc put the industry's biggest question before eleven judges: are sports event contracts CFTC-regulated derivatives immune from state gambling law, or unlicensed wagers Nevada can police? The first panel sided with Nevada.
Where the fight stands
CDC Gaming reports the rehearing has become a procedural battle in itself: Kalshi moved to delay, arguing the CFTC's pending event-contract rulemaking at OIRA could moot the questions; Nevada's attorney opposed, framing delay as a tactic to keep operating in legal fog indefinitely. Meanwhile the Sixth Circuit has already ruled sports contracts can be state-regulated gambling — a split that produced New Jersey's SCOTUS petition and makes the en banc outcome nationally dispositive whichever way it lands.
Illustrative example
| Venue | Status | Leaning |
|---|---|---|
| Ninth Circuit (en banc) | Rehearing pending, delay motion argued | Panel sided with Nevada; full court is a coin toss |
| Sixth Circuit | Decided Sept 2026 | Sports contracts = state-regulable gambling |
| Third Circuit | Decided for Kalshi | Event contracts = CFTC derivatives |
| SCOTUS | NJ petition filed | Cert decision pending |
| CFTC / OIRA | Rule under White House review | Could moot everything — or nothing |
What's actually being decided
Strip away the procedure and the question is elemental: does 'gaming' in the Commodity Exchange Act's event-contract exclusion cover sports outcomes? If yes, every sports contract is regulable by every state — the prediction-market industry shrinks to elections, economics and entertainment. If no, federal derivatives law preempts the statehouse, and the licensing regime 38 states built for sportsbooks becomes optional for anyone with a CFTC registration. Both outcomes are one opinion away; both have a federal agency actively writing rules about them; and the industry is being forced to operate at full scale while the answer is contested.
The groundwork: the Sixth Circuit split, New Jersey's SCOTUS petition, and Nevada's enforcement posture.
