New York sues Kalshi over prediction market gambling

The state is seeking at least $36 billion in damages from the prediction market platform it calls an unlicensed gambling operation, and has filed for a temporary restraining order to halt its contracts immediately.

The lawsuit that prediction markets knew was coming

Two days after the Second Circuit denied Kalshi emergency relief on July 29, New York filed the most aggressive state action yet against the prediction market industry. The suit arrived with a coordinated announcement from AG James and Governor Hochul, counts spanning multiple bodies of state law, a $36 billion damages demand, and a motion for an immediate restraining order.

The $36 billion figure, reported by The Block based on the court filings, is roughly 1.6 times Kalshi’s reported valuation. It is the number every major outlet is leading with, and it signals that New York is treating this as a revenue-extraction case, not merely a cease-and-desist.

This piece examines the filing, the legal arguments on both sides, the federal regulator caught between them, and what the case means for an industry now fighting a war on two fronts: in courtrooms and in Congress.

What the complaint actually alleges

The core claim is straightforward: Kalshi is running an unlicensed gambling business in New York.

The AG’s office says the platform lets users place wagers on uncertain future events, from Super Bowl outcomes to reality TV winners to election results, without a Gaming Commission license and without paying state gaming taxes. New York treats these as bets, not derivatives, regardless of Kalshi’s CFTC registration.

The complaint goes further. It alleges Kalshi allows users aged 18 to 20 to place bets, violating New York’s 21-and-older minimum for mobile sports betting. It alleges the platform offered wagers on games involving New York college teams, a separate violation under state law.

The AG’s investigators placed test wagers from New York accounts as evidence: four “Yes” contracts on a UConn-Michigan basketball game at $1.14 in April 2026, and ten contracts on the winner of “Big Brother” in July 2026. Both transactions completed without obstruction.

The filing also introduces a count under the federal Interstate Wire Act, alleging Kalshi used wire communications to transmit bets across state lines. This is significant because it widens the legal exposure beyond state gambling statutes into federal criminal law, giving the state an argument that operates independently of the preemption question. Even if Kalshi’s CFTC registration were found to preempt state gambling law, the Wire Act is a federal statute, and the state is arguing that Kalshi violates it.

The complaint details the investigative methods in unusual specificity. Rather than relying on industry reports or third-party data, the OAG built its case from the inside. Investigators created accounts, placed real wagers, and documented each step. This matters for the TRO motion: the state can present firsthand evidence that illegal gambling is actively occurring in New York, not merely that it could occur.

“Prediction markets like Kalshi are gambling platforms, plain and simple,” James said in a statement accompanying the filing.

Governor Hochul framed the action around consumer protection, saying Kalshi “has chosen to ignore New York’s gaming laws, which exist to protect consumers, prevent problematic gambling, deliver funding for critical public services, and ensure that every company plays by the same rules.” The coordinated announcement from both the AG and the Governor signals that this is not a routine regulatory action. It is a political priority.

The $36 billion in damages and the TRO

New York is not seeking a slap on the wrist. The headline number is at least $36 billion in compensatory damages, pending a full accounting of Kalshi’s operations. The remedies demand:

• A permanent injunction barring Kalshi from operating unlicensed gambling in the state
• A temporary restraining order halting Kalshi’s event contracts in New York immediately
• A full accounting of every customer bet and loss processed through the platform
• Forfeiture and disgorgement of all gains the state deems illegal
• Restitution to affected consumers
• Penalties of three times Kalshi’s gains under Penal Law Section 80.10
• A fine of $100,000 per unauthorized sports wagering offer under the Racing Law

The TRO is the near-term threat. If granted, Kalshi would need to suspend operations in New York while the case proceeds, potentially for years. The triple-damages provision is the long-term one. At $36 billion, New York is claiming a figure that exceeds the platform’s reported valuation of $22 billion by more than 60%.

The per-offer fine structure adds another layer. The AG’s release notes that Kalshi users bet over $1 billion monthly in 2025, with 90% of that volume on sports. Each unauthorized sports offering carries a $100,000 fine under the Racing Law. At that volume, the per-offer penalties alone could produce a figure in the hundreds of millions.

The damages calculation itself reveals the state’s theory of the case. New York is not treating Kalshi as a minor regulatory violator that failed to file paperwork. It is treating Kalshi as a gambling operation that processed billions in unlicensed wagers over multiple years, and it wants the full economic benefit of that activity returned. The $36 billion figure presumably reflects the total volume of wagers placed by New York users, or a substantial fraction of it, multiplied by the treble-damages provision. The final number will depend on the full accounting the state is requesting, but the opening demand is meant to establish the scale of the alleged violation.

The TRO motion deserves separate attention because it operates on a different timeline from the main case. A TRO hearing can happen within days or weeks, while the underlying lawsuit could take years. If New York secures the restraining order, Kalshi faces an immediate operational decision: comply and lose the New York market, or challenge the order and risk contempt proceedings. Either outcome sets a precedent that other states can follow. Michigan and Nevada secured their own TROs through similar procedural mechanisms, and each one reduced Kalshi’s geographic footprint.

The $1 billion monthly number and why it matters

The AG’s release includes a figure that has received less attention than the $36 billion headline: Kalshi users bet over $1 billion every month on the platform in 2025, and 90% of that money went to sports betting.

This is the number that makes the bipartisan Senate proposal to ban CFTC-licensed platforms from offering sports event contracts existential. Sports are not a side product for Kalshi. They are the product. If sports contracts are removed, whether by state enforcement or federal legislation, the platform loses nine-tenths of its recorded consumer activity.

The figure also undercuts Kalshi’s framing of its offerings as sophisticated financial derivatives. A billion dollars a month on the Super Bowl, the NBA, and college basketball looks like a sportsbook by any name. New York is making exactly that argument, and the AG’s investigators have the receipts.

The concentration matters for investors and market participants as well. Kalshi’s $22 billion valuation implies a diversified event-contract platform serving a range of use cases: elections, weather, economics, entertainment. The AG’s data shows something closer to a sports gambling platform with a derivatives label. If the valuation was underwritten on the assumption of product diversity, the 90% sports concentration represents a disclosure risk independent of the legal outcome.

Kalshi’s federal preemption defense

Kalshi’s position rests on a single legal premise: that its 2020 registration with the CFTC as a designated contract market means its event contracts are regulated derivatives under the Commodity Exchange Act, subject to exclusive federal oversight.

The company calls the suit “political theater” and argues states cannot simply shut down a federally licensed exchange. The framing is deliberate. Kalshi wants this treated as a jurisdictional question, not a gambling question.

It is the strongest version of their argument, and it carries legal weight. The CFTC itself has backed the position, filing lawsuits against multiple states and claiming exclusive regulatory authority over prediction markets. On the same day New York filed its suit, the CFTC filed an emergency counter-motion in Manhattan federal court less than one hour before the state complaint dropped, attempting to reassert federal jurisdiction preemptively.

The federal regulator has now challenged state enforcement in at least nine states, including filing suit against Arizona, Connecticut, and Illinois in April 2026. The CFTC is not a passive bystander in this dispute. It is an active combatant on Kalshi’s side.

Why the federal shield is cracking

On July 7, U.S. District Judge Analisa Torres denied Kalshi’s preliminary injunction against New York’s Gaming Commission enforcement. Her reasoning cut directly at the preemption argument.

Torres cited Section 2 of the Commodity Exchange Act, which states the law “shall not supersede or limit the jurisdiction conferred on other regulatory authorities under the laws of the United States or of any state.” She wrote that “Congress did not intend to regulate so broadly as to exclude all state gambling laws from regulating transactions involving swaps.”

Her conclusion was blunt: “There is nothing preventing Kalshi from obtaining a license pursuant to New York law.”

The Second Circuit denied Kalshi emergency relief on July 29. With the appellate safety net gone, the state had a clear path to file.

The Torres ruling matters beyond New York because it provides a template. Other states facing Kalshi’s preemption argument can cite it directly. The decision rejects the premise that CFTC registration creates a blanket exemption from state gambling law, and it does so by citing the Commodity Exchange Act’s own text. Before Torres, Kalshi could argue that no court had squarely addressed the question. That argument is gone.

The legal logic is worth following in detail. Kalshi’s preemption claim rests on the idea that CFTC registration means its products are regulated derivatives, full stop. Torres responded that the Commodity Exchange Act explicitly preserves state jurisdiction, that the products in question resemble gambling under New York law, and that nothing in federal statute prevents Kalshi from obtaining a state gaming license if it wants to operate in New York. The decision does not say Kalshi cannot exist. It says Kalshi cannot avoid state gambling law by pointing to a federal license that, by its own statute’s terms, was never meant to override it.

The Second Circuit’s refusal to grant emergency relief on July 29 reinforced this reasoning. It did not issue a full opinion, but the denial means Kalshi failed to show a likelihood of success on the merits, which is the standard for emergency relief. Two levels of federal courts have now declined to protect the company from state enforcement.

The result is a genuine constitutional question about the boundary between federal commodity regulation and state gambling law. Kalshi needs either a circuit court reversal or Congressional action to restore the shield it thought it had.

The 38-state coalition

The count that matters is not 13 states with active litigation. It is 38.

In April 2026, James joined a bipartisan coalition of 38 state attorneys general filing an amicus brief supporting Massachusetts in its parallel case against Kalshi. The coalition spans from Alabama to Wisconsin, including red states, blue states, and the District of Columbia. The full list: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Hawaii, Idaho, Illinois, Iowa, Kansas, Louisiana, Maine, Maryland, Michigan, Minnesota, Mississippi, Nebraska, Nevada, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Utah, Vermont, Virginia, Wisconsin, and DC.

On the same day the AGs filed, the CFTC filed its own amicus brief at the Massachusetts Supreme Judicial Court asserting exclusive federal jurisdiction, creating a direct confrontation between the federal regulator and a supermajority of state enforcement agencies.

New York is not operating in isolation. The suit fits into a pattern of escalating state enforcement that has accelerated through 2026:

Massachusetts has a court order restricting Kalshi. Polymarket has countersued the state, opening a second front.

Michigan secured a temporary restraining order against the platform under AG Dana Nessel, making it the third state to obtain a court order.

Nevada issued a TRO covering sports, election, and entertainment contracts. Kalshi responded by removing those categories for Nevada users, effectively conceding the state’s authority in practice while contesting it in court.

Washington holds its own court order restricting the platform. The state’s Gambling Commission issued a cease-and-desist, and Kalshi did not challenge it in court.

Wisconsin handed down an adverse ruling the week of July 28, adding another state to the enforcement column in a decision that received less coverage than the New York and Massachusetts actions but follows the same legal reasoning.

New York itself previously sued Coinbase and Gemini in April 2026 on similar prediction-market allegations. That suit broadened the target set beyond pure-play prediction platforms, signaling that New York views any company offering prediction-style products to state residents as subject to gaming law, regardless of whether the company’s primary business is elsewhere.

In Congress, a bipartisan Senate proposal has emerged that would ban CFTC-licensed prediction market platforms from offering sports event contracts, which would remove the category that accounts for 90% of Kalshi’s recorded volume.

JUST IN: Washington state judge grants preliminary injunction against Kalshi

The ruling deems the prediction market activities illegal gambling under state law pic.twitter.com/u7rY35nZw4

— crypto.news (@cryptodotnews) July 21, 2026

The arithmetic that matters

Kalshi’s reported valuation of $22 billion rests on the assumption that its CFTC registration provides a durable regulatory moat. The annualized transaction volume of $178 billion flows through that assumption. If the federal preemption argument fails at the circuit level, the business model does not downgrade gracefully.

The platform cannot operate as a state-licensed gambling business without fundamental changes to its product, its economics, and its user base. State gaming licenses come with specific requirements: age floors (21 in New York for mobile betting), tax obligations, product restrictions, and compliance infrastructure that a CFTC-registered exchange was never built to support.

Nevada’s example is instructive. When the state issued its TRO, Kalshi did not fight to keep sports, election, and entertainment contracts available to Nevada users. It removed them. If that pattern repeats across additional states, the platform’s addressable market contracts with each new enforcement action.

The numbers tell the story in three layers. First, $36 billion in damages sought in New York alone, exceeding the company’s valuation by 60%. Second, 38 state attorneys general aligned against the federal preemption argument, representing a supermajority of American enforcement capacity. Third, 90% of Kalshi’s monthly volume concentrated in sports, the single category most vulnerable to both state enforcement and the pending Senate ban.

The counter-argument deserves its strongest form. Kalshi’s $178 billion in annualized volume proves genuine consumer demand for event contracts. The CFTC registration is not a legal fiction, and federal regulators are actively fighting to preserve federal jurisdiction. The Commodity Exchange Act does grant the CFTC authority over designated contract markets, and a reasonable reading of federal preemption could conclude that state gambling law should not apply to products traded on a federally licensed exchange. If the CFTC prevails at the appellate level, or if Congress acts to clarify federal preemption, the state cases collapse. Kalshi’s appeal of the Torres ruling remains live, and the Second Circuit has not yet ruled on the merits.

There is also a policy argument that Kalshi rarely makes explicitly but that supports its position. Prediction markets have informational value. Research from academic institutions and the CFTC’s own prior statements have recognized that event contracts can produce useful price signals about future events. A state-by-state licensing regime could effectively kill a market structure that regulators, academics, and the public have found valuable for forecasting elections, economic indicators, and policy outcomes.

But the burden has shifted. Two federal courts have declined to protect Kalshi from state enforcement. Thirty-eight attorneys general have aligned against the federal preemption argument. And 90% of Kalshi’s volume is concentrated in sports, the single category most politically vulnerable. The question is no longer whether states can regulate prediction markets. The question is whether Kalshi can find a court that says they cannot.

What to watch

• The TRO hearing in New York Supreme Court. If granted, Kalshi must suspend operations in the state while the case proceeds. The timeline and conditions of this hearing will set the pace for the entire case.
• The Second Circuit appeal of Judge Torres’s July 7 ruling. If the court reverses on federal preemption, the state enforcement wave stalls. If it affirms, expect additional state filings within weeks.
• The CFTC’s emergency motion filed hours before New York’s suit. The federal court’s handling of this motion will signal whether the judiciary treats CFTC registration as a meaningful shield or a regulatory label.
• Congressional action on the bipartisan Senate proposal to ban sports event contracts. At 90% of Kalshi’s volume, this would be a structural blow regardless of court outcomes.
• Kalshi’s operational response in states with active enforcement. Nevada’s pattern, removal of categories rather than legal confrontation, is the leading indicator of how the business adapts under pressure.

What did New York sue Kalshi for?

New York filed a lawsuit alleging Kalshi operates an unlicensed gambling business by offering wagers on sports, entertainment, and election outcomes without a Gaming Commission license and without paying state gaming taxes. The suit includes counts under the state constitution, Penal Law gambling provisions, the Racing Law, and the federal Interstate Wire Act.

How much is New York seeking in damages?

The state is seeking at least $36 billion in compensatory damages, pending a full accounting of Kalshi’s operations. Additional penalties include three times the company’s gains under Penal Law and $100,000 per unauthorized sports wagering offer under the Racing Law.

What is the temporary restraining order?

Alongside the lawsuit, New York filed a motion for a TRO to halt Kalshi’s event contracts in the state immediately while the case proceeds. If granted, Kalshi would need to suspend operations in New York, potentially for years.

What is Kalshi’s defense?

Kalshi argues that its registration with the CFTC as a designated contract market since 2020 means its event contracts fall under exclusive federal oversight and that states cannot regulate them as gambling. The company calls the suit “political theater.”

How did the court rule on federal preemption?

U.S. District Judge Analisa Torres denied Kalshi’s preliminary injunction on July 7, ruling that the Commodity Exchange Act does not prevent states from applying their gambling laws to event contracts. The Second Circuit denied emergency relief on July 29.

How many states are aligned against Kalshi?

A bipartisan coalition of 38 state attorneys general filed an amicus brief supporting Massachusetts in a parallel case. At least five states, Massachusetts, Michigan, Nevada, Washington, and Wisconsin, have active court orders or adverse rulings restricting Kalshi’s operations.

What role is the CFTC playing?

The CFTC has positioned itself as the exclusive federal regulator of prediction markets, filing lawsuits against multiple states and an emergency motion less than one hour before New York’s suit. The agency has challenged state enforcement in at least nine states and filed an amicus brief directly opposing the 38-state attorney general coalition.

Could this lawsuit shut down prediction markets entirely?

The New York case alone would not end the industry, but it tests whether CFTC registration shields platforms from state gambling laws. With 38 attorneys general aligned against the federal preemption argument and 90% of Kalshi’s volume concentrated in sports betting, the combination of state enforcement and the pending Senate ban on sports event contracts could force a fundamental restructuring of the business model. This is educational analysis, not investment advice.

This article is for informational purposes only and does not constitute legal, financial, or investment advice. The information presented reflects the state of events as of July 31, 2026, and may change as legal proceedings develop. Readers should consult qualified professionals before making decisions based on this material.