Key Takeaways
- Five prominent trading and cryptocurrency platforms are facing legal action from Wisconsin authorities over prediction market services
- Attorney General Josh Kaul filed three distinct legal complaints against Kalshi, Coinbase, Polymarket, Robinhood, and Crypto.com
- State prosecutors contend these “event contracts” constitute illegal wagering under Wisconsin statutes, not legitimate financial products
- The companies stand accused of facilitating gambling without proper state licensing, with platform fees likened to gambling house commissions
- Legal analysts suggest this regulatory conflict may ultimately require resolution by the nation’s highest court
On Thursday, Wisconsin’s top law enforcement official, Attorney General Josh Kaul, initiated legal proceedings against five prominent platforms in the financial technology and cryptocurrency sectors, alleging they operate illegal gambling services without state authorization.
The defendants include Kalshi, Coinbase, Polymarket, Robinhood, and Crypto.com. The state’s legal team submitted three distinct complaints to Dane County court, each focusing on different aspects of the prediction market industry.
The initial complaint identifies Crypto.com and its derivatives division as defendants. A second filing takes aim at Polymarket along with its related corporate entities. The third complaint names Kalshi alongside Robinhood and Coinbase, both of which facilitate prediction market transactions through Kalshi’s infrastructure.
The state’s legal position rests on a straightforward premise. According to Wisconsin prosecutors, these platforms allow customers to pay money for positions on future real-world events, with winners receiving predetermined payouts. By Wisconsin’s legal definition, this constitutes gambling.
“Thinly disguising unlawful conduct doesn’t make it lawful,” Attorney General Kaul stated in an official announcement.
The legal filings cite concrete instances. One example highlights contracts linked to NCAA basketball tournament outcomes, where successful predictions yielded $1 payouts while incorrect positions resulted in total loss.
State attorneys also referenced the platforms’ promotional materials. Kalshi’s Instagram advertisements promoted the service as “The First Nationwide Legal Sports Betting Platform.” Polymarket described itself as “a platform where people can bet on the outcome of future events.”
Wisconsin authorities further contend that collecting transaction fees on each contract mirrors the house advantage retained by traditional gambling establishments.
Jurisdictional Conflict Between Federal and State Authority
The accused platforms maintain their position by citing federal regulatory approval. Kalshi asserts its contracts qualify as swaps listed on a federally regulated exchange, placing them exclusively under Commodity Futures Trading Commission authority.
In early April, the Third Circuit Court of Appeals ruled in Kalshi’s favor, interpreting the CFTC’s decision not to prohibit these contracts as effectively resolving the jurisdictional dispute in the company’s favor.
However, state-level courts have reached different conclusions. Nevada regulators characterized the contracts as “indistinguishable” from traditional gambling. New York’s Attorney General Letitia James declared that “each contract is a bet.”
Expanding State-Level Opposition
Wisconsin joins a growing coalition of states challenging prediction market operators. Several jurisdictions have now initiated legal action against these platforms, collectively building case law around the same fundamental question.
The critical legal issue centers on whether labeling a product as a financial instrument sufficiently exempts it from state gambling regulations.
No definitive answer has emerged. Legal scholars anticipate this regulatory conflict between state gaming authorities and the CFTC will eventually require Supreme Court intervention.
Currently, the five companies identified in Wisconsin’s legal filings must navigate active litigation in the state, while the prediction market sector’s regulatory framework remains in flux nationwide.


