Prediction Market Lawsuits

Prediction markets have exploded in popularity over the past few years, growing from a niche corner of the internet into a multibillion-dollar industry that touches sports, politics, weather, and nearly every other newsworthy event. Platforms like Kalshi, Polymarket, DraftKings, and several newer entrants now allow individual consumers to buy and sell contracts tied to the outcome of future events, often marketed as a form of investing rather than gambling.

That marketing distinction has become the center of a rapidly growing legal fight. State attorneys general, private plaintiffs, and consumer advocacy groups have filed a wave of prediction market lawsuits, alleging that operators are running unlicensed gambling operations, misleading consumers about the nature of their products, and profiting from practices that would never be permitted in a regulated casino or sportsbook.

If you have lost money on a prediction-market platform, or you believe you were misled about how these contracts work, a lawsuit involving prediction-market losses may be one of the legal options worth exploring. Contact our consumer protection attorneys to learn more.

What Is a Prediction Market, and Why Is It Controversial

A prediction market allows users to buy "yes" or "no" contracts on whether a specific event will occur, such as an election result, a sports outcome, or an economic indicator. The price of each contract is meant to reflect the collective odds of the event happening, and the winning side is paid out once the event resolves.

Supporters argue these platforms serve a legitimate price-discovery function, similar to a commodities exchange. Critics, including a growing number of state regulators, argue that many of these contracts, particularly those tied to sports outcomes, function identically to sports betting and gambling products that are otherwise tightly regulated at the state level. This disagreement is the central legal question in nearly all prediction-market litigation filed so far.

States Suing Prediction Markets Over Unlicensed Gambling

A number of states are suing prediction markets, arguing that these companies are operating illegal gambling businesses without a license and without the consumer protections that licensed gambling operators are required to provide. Some recent examples include:

• New York’s attorney general filed suit against a leading prediction-market operator, alleging it ran an unlicensed gambling operation and seeking to force the company to pay restitution, forfeit profits, and pay penalties.
• Similar lawsuits followed against other cryptocurrency exchanges that had begun offering their own prediction-market-style event contracts.
• Nevada regulators secured a temporary restraining order against a major operator, arguing its products violated the state’s gambling laws.
• Washington state filed its own lawsuit alleging that a prediction-market operator was disguising gambling products as financial contracts.
• Rhode Island sued multiple prediction-market platforms over what it characterized as unlawful sports-betting operations.

These state actions generally argue that prediction markets have sidestepped licensing requirements, tax obligations, and consumer safeguards such as self-exclusion programs and deposit limits that licensed sportsbooks are required to offer. Several state officials have specifically raised concerns about underage access and the risk of gambling addiction among users who may not realize they are using a product functionally similar to a sportsbook.

The prediction market operators have generally denied these allegations, arguing that their products are federally regulated derivatives that fall outside the scope of state gambling law, and that federal regulators, not the states, have jurisdiction.

Private Consumer Class Actions Against Prediction Market Platforms

Separate from the state enforcement actions, private consumers have also filed proposed prediction market class action lawsuits. These cases are based on consumer protection theories rather than state gambling licensing, and they focus more directly on how individual users may have been harmed. Recent examples of private litigation include:

• Proposed nationwide class action filed in federal court alleging that a major platform deceived consumers into believing they were getting fairer odds than a traditional sportsbook, when in fact the platform’s structure allegedly worked against users whose bets diverged from the platform’s own internal projections.
• Class action alleging that a platform refused to honor certain contracts by invoking a last-minute contract provision after a high-profile world event, denying payouts to consumers who had accurately predicted the outcome.
• Lawsuit alleging deceptive marketing practices, including advertisements that allegedly promoted the platform as a way to solve personal financial problems such as falling behind on rent.
• Class action brought by a consumer advocacy organization alleging that a platform used paid promotional content, including simulated betting activity, without adequately disclosing the marketing relationship to prospective users.
• Privacy-focused class action alleging that a platform shared users’ trading activity and personal information with third-party advertisers without proper consent.

These lawsuits against prediction markets raise a range of legal theories, including violations of state unfair competition laws, consumer protection statutes, false advertising laws, and in some cases statutes that allow individuals to recover gambling losses from an operator found to be running an illegal gambling business.

Some of these cases seek not only repayment of consumer losses but also treble damages, meaning three times the amount lost, where state law allows for enhanced recovery.

It is important to understand that a lawsuit being filed does not mean a court has found any company liable. These are allegations at this stage, and the companies named in these cases have denied wrongdoing. As these cases move through the litigation process, courts will determine whether the claims have merit.

Common Types of Consumer Harm Being Raised in These Cases

Across the various lawsuits filed so far, several recurring categories of alleged consumer harm have emerged.

• Misleading marketing—Several lawsuits allege that platforms marketed themselves as investment tools or as a path to solving financial hardship, without adequately disclosing the risks involved or the fact that most participants ultimately lose money.
• Unfavorable contract terms disclosed too late—Multiple cases allege that key contract provisions, including carveouts that limited a platform’s payout obligations, were not made clear to users at the time trades were placed.
• Lack of standard consumer safeguards—Unlike state-licensed sportsbooks, prediction markets have generally not been required to offer self-exclusion programs, deposit limits, or the same age-verification standards, raising concerns about vulnerable users and underage access.
• Undisclosed advertising relationships—Some lawsuits allege that platforms used influencer marketing or promotional content without properly disclosing paid relationships, potentially violating consumer-protection and advertising-disclosure laws.
• Data privacy concerns—At least one proposed class action alleges that a platform shared sensitive user trading data with third-party advertisers without proper consent.

The Regulatory Landscape & Prediction Markets

The Commodity Futures Trading Commission, which oversees derivatives markets at the federal level, has taken steps toward developing new rules specifically addressing prediction markets, including proposed restrictions on certain sports-related contracts. At the same time, members of Congress have introduced legislation aimed at establishing clearer consumer protection standards for the industry.

Consumer advocacy organizations have also weighed in, raising concerns that branding gambling products as investment tools could expose consumers, including younger users, to addictive behaviors without the safeguards that traditional regulated gambling products are required to provide.

Until this regulatory picture becomes clearer, the primary avenue for consumers who believe they have been harmed remains private prediction market litigation and state enforcement action.

Do You Have a Potential Case?

If you used a prediction market platform such as Kalshi or Polymarket and believe you were misled about the nature of the product, denied a payout you were owed, or harmed by a platform’s marketing or data practices, you may want to have your situation reviewed by a prediction market lawyer.

Every case is different, and simply losing money on a prediction-market contract does not by itself establish a legal claim. An attorney can help evaluate whether your specific experience may support a claim under applicable consumer protection, gambling recovery, or privacy laws, including options to recover prediction market losses.

Common questions worth discussing with an attorney include:

• Were you provided clear and accurate information about how the contract worked before you traded?
• Did the platform deny a payout based on a term that was not clearly disclosed?
• Were you exposed to marketing that misrepresented the platform as an investment product?
• Was your personal or financial data shared with third parties without your consent?
• Does the platform’s arbitration clause affect your ability to bring a claim?

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References to lawsuits, allegations, or litigation involving any company are based on publicly available court filings, news reporting, or regulatory actions and reflect allegations only, not proven facts or findings of liability. Any company named or referenced has denied or may deny the allegations described, and nothing in this article should be interpreted as a statement that any company has engaged in wrongdoing.