Key Takeaways
- Five prominent crypto and trading platforms are facing lawsuits from Wisconsin alleging illegal gambling operations
- Three distinct legal complaints were filed by the state against Kalshi, Coinbase, Polymarket, Robinhood, and Crypto.com
- Wisconsin contends that “event contracts” constitute betting under state regulations rather than legitimate financial products
- The companies stand accused of functioning without proper gambling authorization while collecting fees similar to casino operations
- This legal battle may eventually reach the nation’s highest court for final resolution
On Thursday, Wisconsin’s Attorney General Josh Kaul initiated legal action against five prominent financial technology and cryptocurrency platforms, alleging they are conducting unauthorized gambling activities within state borders.
The defendants include Kalshi, Coinbase, Polymarket, Robinhood, and Crypto.com. The state submitted three distinct legal filings in Dane County, each focused on different operators within the prediction market space.
The initial complaint identifies Crypto.com and its derivatives division. A second filing is directed at Polymarket and related corporate entities. The third complaint encompasses Kalshi alongside Robinhood and Coinbase, both of which facilitate prediction market transactions through Kalshi’s infrastructure.
Wisconsin’s legal position is straightforward. According to state authorities, these platforms enable users to stake money on real-world events and receive predetermined payouts for correct predictions. By Wisconsin’s legal definition, this constitutes wagering.
“Placing a thin veneer over illegal activity doesn’t transform it into legal activity,” Attorney General Kaul stated in an official announcement.
The legal filings reference concrete cases. One example involves betting contracts connected to NCAA basketball tournament matches, where correct predictions yielded $1 payouts while incorrect ones returned nothing.
State attorneys also highlighted the platforms’ own promotional materials. Kalshi’s social media advertising promoted itself as “The First Nationwide Legal Sports Betting Platform.” Polymarket characterized itself as “a platform where people can bet on the outcome of future events.”
Wisconsin further contends that collecting transaction fees on contracts mirrors how casinos extract a percentage from wagers placed within their establishments.
Federal Versus State Jurisdiction Conflict
The targeted platforms counter by citing federal regulatory authority. Kalshi maintains its contracts qualify as swaps operating on a federally regulated exchange, positioning them under the sole jurisdiction of the Commodity Futures Trading Commission.
Earlier this month, the Third Circuit Court ruled favorably for Kalshi, interpreting the CFTC’s decision not to prohibit the contracts as effectively resolving the jurisdictional matter in the platform’s favor.
However, state-level courts have reached opposing conclusions. Nevada characterized the contracts as “indistinguishable” from traditional gambling. New York’s Attorney General Letitia James declared that “each contract is a bet.”
Mounting State-Level Opposition
Wisconsin joins a growing number of states pursuing legal action. Several jurisdictions have now filed complaints against prediction market operators, each constructing legal arguments around the same fundamental question.
The pivotal issue centers on whether labeling a product as a financial instrument exempts it from state-level gambling regulations.
No definitive legal answer exists currently. Legal scholars predict the conflict between state gambling oversight agencies and the CFTC will ultimately require U.S. Supreme Court intervention.
Presently, the five entities named in Wisconsin’s legal complaints are navigating active litigation within the state, while the broader regulatory landscape for the prediction market sector remains uncertain.



