The End of Bitcoin's Bull Market and MicroStrategy's Structural Vulnerabilities: The Depth Behind the Surge in Shorts

Once a star investor in Bitcoin’s bull markets, MicroStrategy has now fallen to become the company with the highest concentration of short positions among U.S. mega-cap firms. Its aggressive leverage strategy through Bitcoin holdings delivered explosive returns during bull markets, but in the current correction phase, it is raising serious concerns among investors.

Bitcoin Price Plunge Sparks Short Selling

Bitcoin, which hit a record high of over $126,000 in October 2025, has sharply fallen to around $70.76K as of March 2026. This dramatic decline has accelerated skepticism toward MicroStrategy.

Short sellers are currently borrowing and selling approximately 14% of MicroStrategy’s market value, worth about $6 billion. This means roughly $14 of every $100 of the company’s floating shares are being shorted in anticipation of further declines. According to Goldman Sachs’ latest hedge fund activity monitor, MicroStrategy ranks as the most shorted among 50 large-cap stocks with a market cap over $25 billion.

Only 63 hedge funds currently hold this stock, a stark contrast to the bullish stance during previous bull markets.

Leverage Strategy: Best in Bull Markets, Worst in Bear Markets

Developed by Vice Chairman Michael Saylor, this unconventional financial model has been deploying equity issuance and convertible bonds to fund Bitcoin purchases since 2020.

In bull markets, this leverage structure has worked remarkably well. MicroStrategy’s stock soared from $12 in 2020 to over $473 in November 2025, with investors paying a premium for the upside potential created by leverage, causing its stock performance to significantly outpace Bitcoin itself.

However, as the market has turned, the same leverage structure is now working against the company. The stock has fallen 18% in the past month and 60% over the past six months, with the current price around $136, below the theoretical per-share value of the Bitcoin assets held by the company. The premium seen during the bull market has nearly vanished, and downside risk in the bear market is increasing.

Holding 717,722 Bitcoins Becomes a Heavy Burden

MicroStrategy remains the world’s largest corporate Bitcoin holder, with 717,722 Bitcoins stored. At current prices, this amounts to approximately $50.78 billion in assets.

Interestingly, this overwhelming holding has become a central risk factor influencing market sentiment. As short positions reach record highs, MicroStrategy’s future performance is highly dependent on Bitcoin’s next major market move.

According to data from BitcoinTreasuries.net, MicroStrategy accounts for 99.2% of recent corporate Bitcoin purchases, with most of the other 193 publicly traded companies having nearly halted their Bitcoin acquisitions. In the past week, only one other company besides MicroStrategy has added Bitcoin.

Corporate Bitcoin Adoption Rapidly Cooling

As market volatility increases and Bitcoin prices retreat significantly from their bull market highs, the overall momentum of corporate Bitcoin adoption is rapidly waning. Many corporate leaders are becoming increasingly cautious about expanding holdings, and MicroStrategy’s isolated buying stance symbolizes a dramatic shift in market sentiment.

While large Bitcoin holdings fueled growth during the bull market, they have now transformed into the biggest risk factor in the current bear market. The surge in short selling of MicroStrategy reflects not just a stock strategy but also a fundamental market doubt about the sustainability of the company’s Bitcoin adoption model.