A Polymarket trader has accused the prediction market platform of unfairly resolving a disputed market tied to Strategy\u2019s first Bitcoin sale in years.<\/p>\n
The trader claims he lost around $500,000 after betting that the firm had sold BTC before a May 31 deadline \u2013 something that was officially confirmed by an SEC filing on June 1.<\/p>\n
The whole thing centers on a Polymarket event asking whether MicroStrategy (later rebranded to Strategy) would sell any of its Bitcoin by a specific date. The rules stated that the market would resolve to \u201cYes\u201d if the company sold any BTC by 11:59 ET on May 31. Resolution sources included on-chain data, disclosures, and credible reporting.<\/p>\n
On June 1, Strategy filed an 8-K with the Securities and Exchange Commission. As\u00a0CryptoPotato\u00a0<\/em>meldt<\/a>, the firm sold 32 BTC worth approximately $2.5 million between May 26 and May 31 \u2013 clearly within Polymarket\u2019s resolution period.<\/p>\n However, the filing came one day after the May 31 market deadline, creating the central dispute: should the event be judged by when the sale occurred, or by when it was publicly confirmed?<\/p>\n According to the trader, he started buying \u201cYes\u201d shares after noticing that Strategy had deposited<\/a> around $30 million of BTC into Coinbase Prime a week ago \u2013 a move that escalated speculations that the firm would sell.<\/p>\n He said he had reviewed on-chain data, checked past wallet activity, and concluded that Strategy had likely sold BTC before the deadline.<\/p>\n After the firm confirmed the sale on June 1st through the SEC filing, the trader increased his position. He said that the market was still open, arguing that the rules only required a sale within the timeframe \u2013 not confirmation within the timeframe. Here\u2019s where it gets interesting.<\/p>\n The trader claims that Polymarket added a clarification stating that confirmation achieved outside the market\u2019s timeframe would not qualify. And they did that after the fact.<\/p>\n Later, Polymarket added clarification.<\/p>\n \u201cNo information from MSTR, on-chain data, or consensus of credible reporting confirmed that MicroStrategy sold Bitcoin within the market\u2019s timeframe.<\/p>\n Confirmation achieved outside of the market\u2019s time frame does not qualify.\u201d pic.twitter.com\/60O3S1q4LV<\/a><\/p>\n \u2014 willo2 (@willo2_Poly) June 2, 2026<\/a><\/p>\n<\/blockquote>\n The user said that the move constituted a new rule and alleged that the market should either have resolved to \u201cYes\u201d or closed on May 31 if post-deadline confirmation was not allowed.<\/p>\n At the time of this writing, the market has been resolved to \u201cNo.\u201d<\/p>\n The main problem here, according to other traders<\/a> on Polymarket, is that anyone can dispute a market\u2019s resolution by posting a bond, which triggers a debate period. During that debate period, a set of people who hold UMA tokens vote on the correct resolution according to the predefined rules. Many argue that this creates a situation in which UMA whales can manipulate markets during dispute windows, and that Polymarket is doing nothing about it.<\/p>\n De post Trader Claims Polymarket Scammed Him for $500K on MicroStrategy\u2019s Bitcoin Sale Market<\/a> verscheen eerst op CryptoPotato<\/a>.<\/p>","protected":false},"excerpt":{"rendered":" A Polymarket trader has accused the prediction market platform of unfairly resolving a disputed market tied to Strategy\u2019s first Bitcoin sale in years. The trader claims he lost around $500,000 after betting that the firm had sold BTC before a May 31 deadline \u2013 something that was officially confirmed by an SEC filing on June […]<\/p>\n","protected":false},"author":1,"featured_media":45618,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45616","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-feeds"],"yoast_head":"\nTrader Says Polymarket Added a Rule After the Fact<\/h2>\n
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