Key Takeaways
- Bank of America data shows Kalshi controlling 89% of measured U.S. prediction market trading volume
- Prediction market activity increased 4% week-over-week, though Polymarket experienced a 16% decline
- Federal regulators filed lawsuits against Arizona, Connecticut, and Illinois on April 2, 2026 challenging state authority
- Federal appeals court sided with Kalshi in New Jersey dispute on April 6, 2026
- Resolution of jurisdictional conflicts will shape the future regulatory landscape for prediction markets
The U.S. prediction market sector continues expanding, yet an intensifying jurisdictional dispute between federal authorities and state governments is reshaping the competitive landscape.
According to Bank of America research, aggregate weekly trading activity climbed 4% compared to the previous week. Kalshi experienced a 6% volume increase. Polymarket registered a 16% decline during the identical timeframe.
Kalshi currently commands approximately 89% of tracked U.S. prediction market volume. Polymarket accounts for 7% and Crypto.com represents 4%, based on Bank of America’s analysis.
The divergence between platforms stems from regulatory positioning. Kalshi maintains registration with the Commodity Futures Trading Commission (CFTC) and structures its offerings as federally supervised derivatives. Polymarket operates through blockchain technology and has traditionally functioned beyond U.S. regulatory frameworks.
State governments have mounted resistance. Nevada and Massachusetts secured preliminary injunctions targeting Kalshi’s operations. Arizona escalated matters in March 2026 by pursuing criminal prosecution against the platform — marking the first criminal case ever initiated against a CFTC-registered entity.
Federal Agencies File Lawsuits Against Three States
The CFTC and Department of Justice initiated three distinct federal legal actions against Arizona, Connecticut, and Illinois on April 2, 2026. The complaints directly name state governors and regulatory officials.
The CFTC characterized the litigation as “unprecedented” and essential for preserving its exclusive authority over event contracts under the Commodity Exchange Act.
Connecticut distributed cease-and-desist notices targeting sports-related prediction contracts. Illinois followed with similar enforcement actions. Arizona advanced beyond administrative measures with criminal prosecution.
CFTC Chairman Michael Selig stated: “The CFTC will continue to safeguard its exclusive regulatory authority over these markets and defend market participants against overzealous state regulators.”
State authorities maintain their enforcement positions. Connecticut Attorney General William Tong characterized the contracts as “plainly unlicensed illegal gambling.” An Illinois representative argued the platforms subject state residents to products lacking “basic consumer protections.”
Federal Appeals Court Delivers Victory for Kalshi
The U.S. Court of Appeals for the Third Circuit issued a 2-1 decision favoring Kalshi on April 6, 2026. The ruling prevented New Jersey gaming authorities from enforcing state gambling statutes against Kalshi’s operations.
The appellate panel determined that Kalshi’s event contracts constitute “swaps” under the Commodity Exchange Act, establishing the CFTC’s exclusive regulatory jurisdiction. This represents the first federal appellate court decision addressing this jurisdictional question.
Kalshi CEO Tarek Mansour described it as “a big win for the industry.”
Should federal regulators succeed in pending litigation, platforms such as Kalshi could function under unified national oversight. Conversely, adverse outcomes might fragment the sector into state-specific regulatory regimes comparable to online sports wagering.
Binance revealed on April 10, 2026 that it integrated prediction market functionality into Binance Wallet, demonstrating sustained engagement from leading cryptocurrency platforms in this market segment.
The CFTC is currently accepting public feedback through the end of April regarding an Advanced Notice of Proposed Rulemaking addressing prediction market oversight.
