Polymarket Sued by Traders Claiming $6.5M ‘Scam’ Over Bitcoin Prediction Market

Two traders have filed a lawsuit against Polymarket in New York, accusing the prediction market platform of a “bait-and-switch scam” that cost them and other participants more than $6.5 million. The case centers on a single Bitcoin sale contract tied to MicroStrategy, now rebranded as Strategy, and a resolution decision that plaintiffs say contradicted the market’s original terms.

By Ryan Mitchell | July 8, 2026

Traders File New York Lawsuit Alleging $6.5M Polymarket ‘Bait-and-Switch’

The Core Allegation: A Rule Change After the Fact

William Wood and Thomas Bush filed the lawsuit against Polymarket in a New York court, alleging that the platform altered the resolution criteria for a specific prediction market contract after traders had already committed capital based on the original terms. The market in question asked a straightforward question: would Strategy (the company formerly known as MicroStrategy) sell any Bitcoin by May 31, 2026? According to the complaint, the answer should have been an unambiguous “Yes.” GamblingNews.com first reported the details of the filing.[1]

Strategy sold 32 BTC during the window between May 26 and May 31, 2026. The sale occurred within the contract’s stated timeframe. Despite this, Polymarket resolved the market as “No,” applying a revised interpretation that required official confirmation of the sale to be published before the May 31 deadline, not merely for the sale itself to have taken place before that date. The plaintiffs argue this distinction was never part of the original contract language.

The lawsuit characterizes Polymarket’s resolution decision as a deliberate rule change designed to benefit one side of the market at the expense of the other. Wood and Bush claim the platform’s revised interpretation was applied retroactively, after traders had already positioned themselves based on the plain-language reading of the contract. The filing describes the conduct as fraudulent and seeks damages covering the full value of affected contracts.

Who Are the Plaintiffs and What Did They Stand to Win?

William Wood and Thomas Bush are identified as the named plaintiffs, though the lawsuit implies a broader class of traders was affected by the same resolution decision. The complaint states that over $6.5 million in outstanding contracts were impacted by Polymarket’s interpretation shift. That figure represents the total value of positions that would have paid out as “Yes” had Polymarket applied the original, plain-language reading of the contract terms.

Polymarket operates as a decentralized prediction market platform built on the Polygon blockchain. The platform allows users to buy and sell shares in binary outcome markets, with prices reflecting the crowd’s probability estimate for a given event. Polymarket reported over $1 billion in monthly trading volume during peak periods in 2024, making it one of the largest prediction market platforms in the world by activity.[1] The scale of the platform means resolution disputes carry significant financial weight for active traders.

The $6.5M Dispute: How the MicroStrategy Bitcoin Sale Triggered the Conflict

Strategy’s Bitcoin Treasury and the May 2026 Sale

Strategy, the business intelligence company led by executive chairman Michael Saylor, has accumulated one of the largest corporate Bitcoin treasuries in the world. As of mid-2026, Strategy held over 500,000 BTC on its balance sheet, a position built through years of aggressive purchasing funded by equity and debt offerings. The company’s Bitcoin strategy has made it a frequent subject of prediction markets, with traders betting on everything from its purchase timing to whether it would ever sell any holdings.

The specific market at the center of this lawsuit asked whether Strategy would sell Bitcoin by May 31, 2026. Between May 26 and May 31, Strategy sold 32 BTC. By any standard reading of the contract, a sale occurred within the specified window. The 32 BTC sale, while small relative to Strategy’s total holdings, was sufficient to satisfy the “Yes” condition as most traders understood it. The dispute is not about whether the sale happened. Both sides appear to agree it did. The dispute is entirely about when Polymarket required confirmation of that sale to be published.

Polymarket’s Resolution Logic and Why Traders Reject It

Polymarket’s resolution committees use a combination of designated data sources and internal judgment to determine market outcomes. In this case, Polymarket ruled that the market required official, publicly confirmed documentation of the sale to appear before the May 31, 2026 deadline. Because the confirmation was published after the deadline, even though the sale itself occurred before it, Polymarket resolved the contract as “No.”

The plaintiffs argue this interpretation was never disclosed in the original market rules. They contend that traders who bought “Yes” shares did so based on the reasonable understanding that a sale occurring before May 31 would satisfy the contract, regardless of when a confirmation document appeared. The lawsuit frames Polymarket’s post-hoc interpretation as a material change to the contract terms, one that shifted millions of dollars from “Yes” holders to “No” holders. GamblingNews.com noted that Polymarket has not issued a detailed public response to the specific allegations in the complaint.[1]

Prediction Market Resolution Rules: Why Ambiguity Costs Millions

How Binary Prediction Markets Resolve Outcomes

Prediction markets like Polymarket operate on binary contracts: a market resolves as either “Yes” or “No,” and shares pay out $1 or $0 accordingly. The resolution criteria, the specific conditions that determine which outcome applies, are supposed to be defined before the market opens. When those criteria are ambiguous, or when a platform applies a different interpretation than the one traders relied on, the financial consequences can be severe.

Polymarket is not the first prediction market to face a resolution dispute. The platform faced criticism in late 2024 over the resolution of several U.S. election-related markets, where traders argued that resolution committees applied inconsistent standards. Those disputes did not result in lawsuits of this scale, but they established a pattern of community concern about how Polymarket handles edge cases. Casino.org has covered the growing regulatory scrutiny facing prediction market platforms operating in the United States.[2]

The Legal Standard: What Wood and Bush Must Prove

For the lawsuit to succeed, Wood and Bush must establish several things in a New York court. First, they must show that Polymarket’s original contract language created a binding obligation to resolve the market based on whether a sale occurred before May 31, not whether confirmation appeared before that date. Second, they must demonstrate that Polymarket’s revised interpretation constituted a breach of that obligation, or alternatively, that the platform’s conduct meets the legal threshold for fraud or deceptive trade practices.

Prediction market contracts exist in a legal gray zone in the United States. The Commodity Futures Trading Commission (CFTC) has jurisdiction over certain event contracts, and Polymarket previously paid a $1.4 million settlement to the CFTC in January 2022 for offering illegal binary options contracts to U.S. persons.[2] That prior regulatory action is relevant context: Polymarket has already been found to have operated outside U.S. legal boundaries once, which may affect how a court views the platform’s conduct in this case. Polymarket subsequently geo-blocked U.S. users, though enforcement of that restriction has been inconsistent.

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What the Polymarket Lawsuit Means for Crypto Gamblers and Bitcoin Bettors

For anyone who uses crypto-native platforms to wager on real-world outcomes, whether through prediction markets, Bitcoin sportsbooks, or decentralized poker rooms, the Polymarket lawsuit carries a direct warning. The core risk exposed by this case is not unique to Polymarket: any platform that retains unilateral authority to interpret its own resolution rules can, in theory, apply that authority in ways that disadvantage traders after positions are already locked in.

Bitcoin gamblers who use offshore or decentralized platforms face a version of this risk every time they place a bet. Unlike regulated sportsbooks or licensed online casinos, decentralized platforms often lack independent dispute resolution mechanisms or regulatory oversight that would constrain how they handle edge cases. The $6.5 million figure in this lawsuit is a concrete illustration of what that exposure looks like when it materializes. If you use crypto platforms for any form of wagering, understanding the resolution or payout rules before committing funds is not optional; it is the single most important due diligence step you can take. For a broader look at how crypto poker platforms handle disputes and player protections, the crypto poker platform reviews on this site cover the key factors to evaluate before depositing.

The Polymarket case also highlights why platform reputation and track record matter more than marketing copy. Traders who held “Yes” positions in this market did so based on a reasonable reading of the contract. The lesson for crypto bettors is to treat any platform’s resolution committee as a counterparty risk, not a neutral arbiter, and to size positions accordingly.

Key Takeaways

• William Wood and Thomas Bush filed a lawsuit against Polymarket in New York, alleging fraud and breach of contract over a Bitcoin prediction market resolution.
• The disputed market asked whether Strategy (formerly MicroStrategy) would sell Bitcoin by May 31, 2026; Strategy sold 32 BTC between May 26 and May 31.
• Polymarket resolved the market as “No,” applying a revised rule requiring sale confirmation to appear before the deadline, not just the sale itself to occur before it.
• Over $6.5 million in outstanding contracts were affected by Polymarket’s resolution decision, according to the lawsuit.
• Polymarket previously paid a $1.4 million CFTC settlement in January 2022 for offering illegal binary options to U.S. persons, establishing a prior regulatory record.[2]
• The case raises fundamental questions about whether prediction market platforms can retroactively reinterpret contract terms after traders have committed capital.
• Any crypto bettor using decentralized or offshore platforms faces similar resolution-rule risk and should review payout criteria before placing positions.

Frequently Asked Questions

The Bottom Line

The Polymarket lawsuit filed by William Wood and Thomas Bush is not just a dispute over 32 BTC and a single contract. It is a stress test for the entire model of decentralized prediction markets, where the platform that hosts a market also controls how that market resolves. When those two roles sit with the same entity, and when the resolution criteria are written with enough ambiguity to support multiple interpretations, the potential for conflict is structural, not incidental. The $6.5 million figure attached to this case makes that structural problem impossible to ignore.

For Polymarket, the lawsuit arrives at a sensitive moment. The platform has spent years building credibility as a neutral information aggregator, a place where crowd wisdom prices real-world probabilities. A court finding that Polymarket altered its own rules to the detriment of traders would fundamentally undermine that positioning. Even if Polymarket prevails on the legal merits, the reputational cost of this case is already accumulating. Competing prediction market platforms, including Kalshi, which operates under CFTC oversight in the United States, will likely use this dispute to argue that regulatory compliance is a feature, not a constraint.

The outcome of this case will set a precedent, either confirming that prediction market platforms can interpret their own rules with broad discretion, or establishing that traders have enforceable rights when a platform changes the terms of a contract after the fact. Either way, the crypto prediction market industry will not look the same on the other side of this verdict. In a space built on the promise of trustless, transparent outcomes, trust is the one thing you cannot afford to lose.

Sources

1. GamblingNews.com – Primary reporting on the Polymarket lawsuit filed by William Wood and Thomas Bush, including the $6.5 million figure and the MicroStrategy Bitcoin sale details.
2. Casino.org – Coverage of Polymarket’s January 2022 CFTC settlement and ongoing regulatory scrutiny of U.S.-facing prediction market platforms.