MicroStrategy’s first Bitcoin offering sparks an $8 million controversy! Polymarket’s prediction market erupts into chaos

Strategy’s first sale of Bitcoin was not announced for a long time, triggering controversy over a $8 million bet in the Polymarket prediction market, as users were unhappy with the platform deciding the outcome based on “technical details.”
(Background recap: MicroStrategy Strategy’s first sale of 32 BTC! MSTR falls 5% before the market opens, shattering the “never sell” myth)
(Background addition: a16z: Prediction markets are a key tool for humans to combat uncertainty)

Table of Contents

Toggle

• Sold but not announced: $8 million bet
• User backlash: “You should trade facts, not technical details”
• Saylor’s first sale: from “never sell” to “ inoculate the market”

Strategy (formerly MicroStrategy) sold 32 bitcoins between May 26 and May 31, but it was not formally announced until June 1, leading to controversy after a bet of more than $8 million erupted in the Polymarket prediction market.

Sold but not announced: $8 million bet

The Polymarket prediction market “Did Strategy sell Bitcoin before May 31?” has accumulated more than $8 million in total wagers. Users can choose between two options: “will sell” or “won’t sell.”

Strategy’s SEC regulatory filing does state that it sold 32 BTC between May 26 and May 31 (about $46,000), but the announcement was not released until June 1, and Polymarket therefore determined the result as “won’t sell.”

In an additional explanation posted on Tuesday, Polymarket said: “There was no information from MSTR, on-chain data, or reliable reports confirming that Strategy sold Bitcoin during the market window.”

User backlash: “You should trade facts, not technical details”

Multiple Polymarket users expressed their dissatisfaction on community platforms:

One affected user said, “Polymarket should trade the facts, not technical details.” Another user said this made them “lose a lot of confidence in Polymarket.” Still another user directly called it “today’s disappointment in this company—unbelievable.”

The market is currently awaiting a second-round ruling on the dispute, which will be decided before Wednesday at 00:00 UTC. If there is no announcement by then, Polymarket says it will clear the order book.

Saylor’s first sale: from “never sell” to “ inoculate the market”

Strategy founder Michael Saylor first raised the idea of selling bitcoin during the Q1 earnings call on May 5, saying that selling would “inoculate” the market against sudden panic. He said market participants would realize: “The company is fine, Bitcoin is fine, the industry is fine, the world is not ending.”

This sale also broke Strategy’s long-standing commitment to “never sell the bitcoin it holds.”

Within 5 hours after Strategy announced the sale on Monday, bitcoin fell 2.5%, dropping to $70,815, and has since partially rebounded to $71,200.

This sale event also highlights another trend in the crypto market: prediction markets are growing rapidly. According to a previous report by DoinTech, a16z views prediction markets as “a key tool for humans to combat uncertainty,” and major market maker Wintermute has also announced that it will move into prediction markets as a liquidity provider.

While the $8 million controversy happened on Polymarket, the core logic behind it applies to investors as well: delays in information transmission themselves are an opportunity for arbitrage. Strategy has disclosed the sale in its SEC filings, but the market has to wait for the announcement to react—this 5-day information vacuum is precisely the profit window for prediction markets.

Many investors rely on media summaries or community reposts to get information, and information delays may range from several hours to several days. This incident reminds us: in crypto markets, the speed of first-hand information sources directly affects the quality of investment decisions. Directly tracking SEC regulatory filings, on-chain data, and original sources can greatly reduce the risk of information lag.