In May, Polymarket ran a market with a clean question: will MicroStrategy sell any Bitcoin by May 31? The company’s own SEC filing later confirmed a sale of 32 BTC between May 26 and 31, inside the window. The market resolved No. Over $60 million had traded on it.
The dispute was never about whether the sale happened. It was about what “sells by May 31” means when the sale happens in the window but the public confirmation (the filing) lands on June 1. The resolution process, a vote of UMA token holders, went with the stricter reading. That reading didn’t exist when the market opened. Polymarket added it after trading had already closed, quietly turning a question about whether a sale happened into a question about whether it was announced in time. That wording change is the whole basis of the lawsuit that followed.
In July it escalated: traders who lost money on the market sued Polymarket. The complaint’s sharpest line: “The sale was the event. The SEC filing was proof of the event. Polymarket used the timing of the proof to defeat the proof of timing.”
Whatever the court decides, one shift is already permanent. Resolution language has moved from fine print to a legal question. Every serious trader should price that in, and every platform now knows the next ambiguous market could end up as an exhibit. The full story of why resolution is the industry’s biggest unsolved problem: Resolution: The Risk Nobody Prices In.
Nothing here is financial advice. Prediction markets involve real risk, so never trade money you can’t afford to lose.