Strategy's $216M Bitcoin Fire Sale: Breaking the 'Never Sell' Mantra and the Polymarket Dispute That Shook Prediction Markets

On July 6, 2026, Strategy (formerly MicroStrategy) disclosed in an SEC Form 8-K that it had sold 3,588 Bitcoin for approximately $216 million between June 29 and July 5, 2026 . The sale was executed in two batches: 1,363 BTC at an average of ~$59,256 and 2,225 BTC at an average of ~$60,773, for an overall average price of about $60,200 per BTC . Proceeds were earmarked to fund dividend payments on Strategy's preferred securities, including STRF, STRE, STRK, STRD, and STRC .

This was Strategy's largest Bitcoin sale since it began accumulating BTC in 2020—and only its third disposal ever . More importantly, it was the company's first material Bitcoin sale since December 2022 (a tiny 32-BTC sale in May 2026 was its first in any form) . The move represented a definitive break from Michael Saylor's long-held public mantra of "never sell your Bitcoin." Multiple sources described the sale as a signal that dividend obligations had begun to actively shape Strategy's treasury management, effectively converting Bitcoin from a pure strategic reserve asset into a liquidity tool .

The sale also came at a realized loss. Strategy's overall cost basis as of mid-2025 was approximately $70,982 per BTC . The average sale price of ~$60,200 was well below that figure, meaning the company realized a loss on the disposal .

The $216M Sale in Context: Why Strategy Sold

The pressure came from Strategy's STRC perpetual preferred stock, launched in July 2025. This instrument pays an annualized dividend that had risen to 12.00% by late June 2026, costing the company an estimated $1.26 billion per year . In late June 2026, Strategy authorized a new "Digital Credit Capital Framework" allowing up to $1.25 billion in Bitcoin sales to fund dividends, buybacks, and liquidity . The 3,588-BTC sale was the first major action under that framework. Following the sale, Strategy still held 843,775 BTC and $2.55 billion in U.S. dollar reserves .

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The Polymarket Dispute: A Separate 32-BTC Sale Sparked a Record Oracle War

It is critical to distinguish two events: The 3,588-BTC sale in July 2026 is a separate transaction from the Polymarket controversy. The Polymarket dispute was triggered by a much smaller sale of 32 BTC (~$2.5 million) that occurred between May 26 and May 31, 2026—Strategy's first Bitcoin sale of any kind since December 2022 .

The Prediction Market

A Polymarket contract asked a simple binary question: "Will MicroStrategy sell any Bitcoin by May 31, 2026?" . Traders wagered heavily on the outcome. Estimates of total trading volume vary widely across sources: $60 million , $80 million , $300 million , and even $400 million are cited across different reports. Regardless of the exact figure, it became one of Polymarket's largest markets of the year and the largest UMA oracle dispute since the Zelenskyy market .

The Dispute: What Happened

• Strategy sold 32 BTC between May 26 and May 31, which fell within the market's deadline window (11:59 PM ET on May 31) .
• However, the company did not publicly disclose the sale until its SEC Form 8-K filing on June 1, 2026—after the deadline had passed .
• Polymarket's oracle initially resolved the market as "No" (no sale by the deadline), reasoning that no public confirmation existed before the cutoff .
• Traders who bet "Yes" challenged the resolution, arguing that the actual transaction date—not the disclosure date—was what mattered under the plain language of the contract .
• The dispute escalated to the UMA oracle, where token holders vote on contested outcomes. After two rounds of disputes, the "No" resolution was upheld with 98.6% of voting power backing it .

Why It Matters

The dispute became a stress test for decentralized prediction market infrastructure. Critics argued that token-voting oracles are structurally unsuited for high-stakes settlement because token holders may vote based on financial incentives or external pressure rather than contract rules . The case also highlighted the centrality of information timing in prediction market design: does the actual event or its public confirmation determine market resolution? In this case, Polymarket's governing system sided with the disclosure date .

Trader Losses and Final Outcomes

Multiple traders reported significant losses. One trader known as "willo2" claimed to have lost approximately $500,000 as a result of the dispute and Polymarket's handling of the rules . Another report cited losses of up to $527,000 for a single trader . The May contract ultimately settled as "No," while a separate June contract (covering June 1–30) later settled as "Yes" after further Strategy sales were confirmed .

Clarification: This Was Not a Lawsuit

The term "lawsuit" is a mischaracterization. Multiple sources describe the event as a "dispute" or "challenge" that went through Polymarket's internal UMA oracle-based resolution system—not a formal court case . It was a private contractual dispute resolved by token-holder governance vote.

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Key Takeaways

• Strategy's 3,588-BTC sale ($216M) was its largest Bitcoin disposal ever, conducted at a ~$10,700 per BTC loss relative to its cost basis, to fund $1.26B in annual preferred stock dividends.
• The sale marked a strategic shift for Michael Saylor's company: Bitcoin began functioning as a liquidity management tool rather than a permanent strategic reserve.
• The Polymarket dispute (over a separate 32-BTC sale) became the largest UMA oracle challenge since the Zelenskyy market, testing whether decentralized token-voting systems can fairly resolve prediction market outcomes when information timing is ambiguous.
• Polymarket upheld the "No" resolution with 98.6% of UMA voting power, prioritizing the date of public disclosure over the date of the actual transaction for settlement purposes.