Wisconsin sues Kalshi, Polymarket, Robinhood, Coinbase and Crypto.com over sports contracts
State DOJ alleges sports event prediction contracts constitute illegal gambling under Wisconsin law
Briefing
- •Wisconsin's Department of Justice filed suit against Kalshi, Polymarket, Robinhood, Coinbase, and Crypto.com alleging their sports event contracts violate state gambling law.
- •The complaint targets the language used by prediction market platforms, arguing it describes gambling activity rather than investing or trading.
- •The action deepens the jurisdictional conflict between state gambling regulators and federal authorities over the legal status of sports prediction markets.
- •Kalshi and similar platforms have operated under CFTC oversight as derivatives exchanges, a federal framework that state regulators appear unwilling to treat as pre-emptive.
Analysis
- →Wisconsin's suit adds a fifth state-level action against prediction market platforms within days, each independently capable of blocking operations in that state regardless of CFTC pre-emption outcomes. For COIN and HOOD, the litigation tail is now multi-state and growing, meaning legal reserves and compliance costs compound even if any single suit fails. The Wisconsin framing targeting platform language, not just product structure, broadens the legal surface area and could apply to Robinhood's and Coinbase's broader crypto trading interfaces.
- →The state AG campaign is now coordinated across jurisdictions with overlapping legal theories. Wisconsin joins New York in characterizing prediction market contract language as gambling, not derivatives trading. If courts in multiple states uphold this framing, it creates a precedent that CFTC designation as a designated contract market does not insulate platforms from state gambling law, permanently fragmenting the US addressable market for Kalshi and Polymarket regardless of any federal resolution.
Historical Context
- 2012
Intrade, a prediction market operating under CFTC oversight, was ordered by the CFTC to block US customers from trading event contracts the agency deemed off-limits. The episode showed that CFTC designation did not fully insulate prediction markets from enforcement, a direct precedent for the current state-level actions.
- 2011-2012
PASPA did not pre-empt state gambling laws, and attempts by states to legalize sports betting were blocked until Murphy v. NCAA in 2018. The current CFTC pre-emption argument mirrors that federal-state tension: federal authorization does not automatically nullify state gambling prohibitions, and courts took years to resolve the conflict.
Connected Events
New York AG sues Coinbase and Gemini over unlicensed prediction markets
The New York AG sued Coinbase and Gemini over unlicensed prediction markets two days before Wisconsin filed, using nearly identical gambling-law framing. The rapid multi-state pile-on suggests coordinated legal strategy among state AGs rather than independent actions.
US soldier charged with insider trading on Polymarket using classified Maduro raid intel
The DOJ charged a US soldier with insider trading on Polymarket using classified intel on the same day as the Wisconsin suit, giving state AGs concrete criminal conduct to cite as evidence that federal oversight has been inadequate.
Kalshi plans crypto perpetual futures to rival Coinbase and Robinhood
Kalshi's planned entry into crypto perpetual futures to compete with Coinbase and Robinhood means the three firms named in Wisconsin's suit are now commercial rivals as well as co-defendants, complicating any coordinated legal defense or lobbying response.
