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What Creates a Short Squeeze?
Understand the mechanics behind one of the most powerful moves in the market.
The Basics
When investors believe a stock will fall, they "short" it — borrowing shares to sell now, hoping to buy them back cheaper later. A short squeeze happens when the stock rises instead, forcing short sellers to buy shares to cover their positions, which pushes the price even higher.
The Mechanics
Think of it like a crowded exit. If everyone rushes for the door at the same time, the door gets jammed. Short sellers are all trying to buy at the same time, creating massive buying pressure on top of any organic demand.
Famous Example
In 2021, GameStop (GME) had over 100% of its float sold short. When retail buyers started pushing the price up, short sellers were forced to cover, creating a feedback loop that sent the stock from $20 to $400+ in weeks.
What to Watch For
High short interest (above 20% of float), low float, and a catalyst that could force short sellers to act. These three ingredients together can create explosive moves.
Key Takeaways
- Short squeezes happen when short sellers are forced to buy
- High short interest + low float + catalyst = squeeze potential
- Squeezes can be violent in both directions
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