New York sues Kalshi over prediction market gambling

New York state has sued Kalshi, the prediction market platform, alleging that its prediction market gambling operation constitutes an illegal business running without proper state approval, according to CNBC. The lawsuit, filed in Manhattan state court, argues that Kalshi accepts wagers as a gambling business while disregarding New York’s constitution and laws by failing to register with the state’s Gaming Commission.

Attorney General Letitia James framed the case bluntly: platforms calling themselves prediction markets are fundamentally gambling platforms operating in violation of state rules. Governor Kathy Hochul added that the state is acting to halt what it views as illegal behaviour and force compliance with New York law.

This is not New York’s first attempt to shut down Kalshi. The company first sued the state in October after receiving a cease-and-desist letter from the Gaming Commission, but a federal judge denied Kalshi’s requests for emergency court orders to block enforcement earlier this month.

Why New York and the feds are now in a direct collision

The prediction market gambling dispute sits at the intersection of two competing legal claims, and both sides have armed themselves with regulatory authority. New York believes prediction market gambling on sports events is sports betting, which falls under state jurisdiction. The federal Commodity Futures Trading Commission (CFTC), which licenses Kalshi, believes all event contracts are financial derivatives called swaps, which are exclusively federal territory.

This is not theoretical squabbling. Prediction markets have exploded in trading volume over the past few years because retail traders have flocked to platforms offering contracts tied to real-world events: elections, sports outcomes, cultural moments. Kalshi operates as a federally licensed exchange under CFTC oversight, meaning the company argues it has the right to offer these products nationwide.

But New York is saying that prediction market gambling on certain events should not exist under state law, regardless of federal blessing. The state is not just targeting sports wagers (which 44 other state attorneys general also challenged this week). New York’s lawsuit also claims Kalshi’s election contracts, culture-related contracts and other event offerings violate state law.

The CFTC has already escalated the standoff. Just before New York filed its suit, the agency filed for a temporary restraining order to block New York from enforcing state law against Kalshi. In April, the CFTC sued New York directly, seeking a permanent injunction to prevent the state from regulating CFTC-registered platforms offering prediction market gambling.

What the state is asking the court to do

New York’s lawsuit seeks a permanent injunction to shut down Kalshi’s operations in the state. But the financial penalties are substantial: the state wants $100,000 in fines for each instance Kalshi offered sports wagering contracts. It also seeks restitution to any New Yorker who placed trades on the platform, plus damages equal to three times whatever profit Kalshi gained by allegedly operating illegally.

Kalshi, headquartered in Manhattan, has rejected the framing. A company spokesperson said the state is engaging in “political theatre” and noted that federal law should prevail: states cannot simply shut down a federally licensed exchange.

How this prediction market gambling case will reshape the industry

The case reveals a fundamental mismatch in how different regulators classify the same activity. When you place a trade on Kalshi’s platform, are you engaging in prediction market gambling (a state matter), or are you trading a financial contract (a federal matter)? The answer determines whether New York can ban it or the CFTC can allow it.

Kalshi is not alone in this fight. The CFTC’s involvement suggests the agency views state crackdowns as a threat to its regulatory authority over prediction markets. Meanwhile, 44 state attorneys general have signalled they oppose the CFTC’s reading of the law, indicating this is not a New York quirk but a coordinated state position.

Could prediction market gambling be banned nationwide despite federal approval?

Not immediately. Federal law typically overrides state law when there is a direct conflict and the federal regulator has explicit authority. The CFTC claims it has that authority over prediction market gambling contracts classified as swaps. However, if states can successfully argue that prediction market gambling is sports betting (not derivatives trading), they may retain regulatory power. A federal appeals court or the Supreme Court would ultimately settle this classification dispute, and the process could take years.

What this means for you

Whether you trade on prediction markets, hold US equities through a 401(k), use an ISA in the UK or trade in India, this case affects how regulators define your rights to trade different assets. Here is what matters:

• If you have placed trades on Kalshi or another prediction market platform, the outcome of this lawsuit could affect your access to those platforms in New York and may determine whether you receive compensation if the platform is forced to shut down in your state.
• The broader battle between federal and state regulators signals that prediction market gambling regulation remains unsettled across North America, meaning platforms may face inconsistent rules across different jurisdictions and users should expect potential service restrictions.
• The legal outcome will set a precedent for whether retail trading platforms must comply with state-by-state licensing requirements, which could reshape how fintech companies operate and which states they can serve without friction.

Thewealthora’s in-depth guides on prediction markets, federal versus state financial regulation and how retail traders navigate platform access restrictions offer more context on these emerging regulatory tensions.

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Originally reported by CNBC. Facts verified; analysis and wording are Thewealthora’s own.

Arpit Soni

The Thewealthora desk covers markets, money and personal finance, with zero jargon and every claim sourced.