Strategy's recent bitcoin sale has ignited a significant $15 million betting conflict on Polymarket. The firm's 8-K filing made on June 1 revealed sales conducted between May 26 and May 31, raising contention regarding whether these trades should be counted for the May 31 deadline. Currently, the contract for May 31 stands at 81% 'Yes' and is under review as bettors debate the validity of the on-chain transactions versus the timing of the filing.

Key Insights

  • A $15 million prediction market dispute has emerged following Strategy's bitcoin sale announcement, questioning if trades from May 26 to May 31 are valid for the May 31 deadline.
  • Bettors supporting 'Yes' base their stance on on-chain timestamps and the 8-K filing, which indicates that 32 bitcoin were sold during that period, while 'No' bettors argue that the lack of public disclosure before June 1 invalidates these trades.
  • The contracts for May 31, June 30, and December 31 have recorded approximately $24.7 million in transaction volume, with the UMA oracle set to make the final ruling amid a pricing shift indicating a high likelihood of bitcoin sales.

The initial bitcoin sale by Strategy (formerly MicroStrategy) has led to a $15 million contention on Polymarket. The sale was disclosed in a filing on June 1, yet the actual transactions took place in late May. Bettors are currently divided on whether the sales that occurred between May 26 and May 31 should be eligible for the May 31 contract, which remains at 81% 'Yes' and is marked as "in review."

The bet titled "MicroStrategy sells any Bitcoin by ___?" on Polymarket hinges on time-stamped contracts, which resolve to 'Yes' if any bitcoin was sold by 11:59 p.m. ET on the specified date.

The resolution process becomes intricate as the governing rules indicate that the outcome will depend on MSTR's filings and on-chain data, supplemented by a consensus of credible reporting.

While Strategy sold bitcoin between May 26 and May 31, the 8-K was officially filed on June 1.

Proponents of the 'Yes' position contend that their argument is valid based on the resolution guidelines, asserting that the 8-K indicates the sale occurred prior to the May 31 deadline, as it mentions the bitcoin activity "as of May 31, 2026, 4:00 p.m. Eastern Time." Conversely, 'No' supporters maintain that no public information was available until after the filing on June 1, which was past the May 31 cutoff, despite the timing of the sale.

Subsequently, the contracts for June 30 and December 31 have been priced at 100% 'Yes' since the announcement, with 'Yes' trading at 99.9 cents and 'No' at 0.1 cents. The three contested timeframes have collectively drawn around $24.7 million in volume, with the May 31 market alone accounting for approximately $14.65 million.

As the dispute continues, UMA's optimistic oracle, which serves as the resolution mechanism for ambiguous markets on Polymarket, will deliver the final decision. Typically, such disputes are reviewed over a two-day period.

Prior to the filing, Polymarket had estimated the odds of any Strategy bitcoin sale occurring by year-end at 84%, a notable increase from just 10% earlier in the spring, following comments by CEO Phong Le regarding a "disciplined sale of bitcoin" as a means of capital management.

The current debate surrounds not the occurrence of the sale, but rather the timing of the sale and the resulting payouts.

For further information: Michael Saylor's Strategy signals potential bitcoin sale to fund dividends obligations

Polymarket