What Is a Short Squeeze and How Does It Work in Financial Markets?

What Is a Short Squeeze?

A short squeeze is a rapid price increase that forces investors with a short position to buy back the asset, which can push the price even higher.

With a short position, a trader is betting on a price drop. In a classic short position, the trader borrows shares and sells them right away, with the goal of buying them back later at a lower price. The trader then returns the repurchased shares to the lender. If the price falls, the trader makes a profit. If the price rises, the loss grows.

That is where a short squeeze can happen. To close a short position, a trader has to buy back the asset. When many short sellers do this around the same time, sudden extra buying pressure appears. That can push the price higher, which forces even more short sellers to close their positions.

This creates a self-reinforcing effect: the price rises, short sellers buy to close their positions, and that extra buying pressure can then push the price even higher.

Example: Suppose a stock is trading at €100 and many traders are short. The price unexpectedly rises to €110. Some of those traders buy back to limit further losses. Because of all those extra buy orders, the price might rise to €120, which increases the pressure on the remaining short sellers.

Important to know: not every sharp price increase is automatically a short squeeze. The rise has to be driven in a major way by short sellers closing their positions. This is also called short covering. A short squeeze can happen naturally, for example when unexpected positive news pushes the price up. Deliberately manipulating the price or the available supply to trigger a short squeeze is forbidden.

Key Takeaways

• A short squeeze happens when rising prices put pressure on short sellers to buy.
• Closing a short position normally creates a buy transaction.
• Many short sellers buying at the same time can further strengthen a price increase.
• Short squeezes can happen in stocks, futures, and crypto derivatives.
• A rapid rise is not always a short squeeze; there has to be short covering or forced closing.

How Does a Short Squeeze Work?

A short squeeze works like an upward domino effect: an initial price increase causes losses for short sellers, after which their buy orders can strengthen the rise.

The first price move can have all kinds of causes. Think of sudden buying interest or a market where little supply is available. For a short seller, the reason does not matter much: once the price goes up, the position becomes more unprofitable.

Some traders then close voluntarily. They want to avoid a small loss turning into a much bigger one. Other traders have less choice. For example, they may have to add extra collateral because their position uses margin.

Margin is money or other collateral you set aside to open a leveraged position. Leverage means you control a larger position than your own deposit. If the available collateral falls below the minimum requirement, a trading platform may ask for extra money. If that does not happen, the position can be closed in whole or in part. That is called liquidation.

With futures, you usually close a short position with the opposite transaction: you buy back the same futures contract. A futures contract is a contract that lets you trade on the future price of an underlying asset. The profit and loss on these positions is continuously updated based on the current market price.

The core always stays the same:

1. The price rises.
2. Short positions move further into loss.
3. Short sellers buy to close their positions, voluntarily or by force.
4. That buying pressure can push the price even higher.
5. As a result, new short sellers can run into trouble.

This kind of move usually stops when most of the forced buying pressure is gone, or when enough sellers return to the market.

What Causes a Short Squeeze?

A short squeeze usually starts with a sharp price increase that makes short positions increasingly uncomfortable.

That price increase is the direct trigger. The higher the price goes, the bigger the loss for someone who is short. That makes closing the position more attractive, or even necessary.

In classic stock shorting, the availability of shares to borrow can also play a role. A short seller eventually has to buy back the borrowed shares and return them. If it becomes hard to borrow shares, that can add extra pressure to reduce the position.

In futures markets, scarcity of available supply can have a similar effect. If short sellers want to close their position but find little supply, they may have to buy at increasingly higher prices.

Leverage can speed everything up. With leverage, there is less room to absorb a price move against your position. If your margin falls below the required level, you have to add collateral or liquidation may follow. In crypto futures and perpetual futures, this happens based on the rules of the relevant crypto exchange.

A high short interest or a lot of leverage does not automatically mean a squeeze will happen. Short interest is the number of open short positions at a given time. It can show that many potential buyers are ready if short sellers have to close, but without a clear price trigger and enough buying pressure, nothing has to happen.

In Which Financial Markets Do Short Squeezes Happen?

Short squeezes happen mostly in stock markets, but they can also happen in futures and in the crypto market.

In stocks, the mechanism is often easiest to understand. A trader borrows shares, sells them, and buys them back later. If the price rises sharply, that trader has to buy back at a higher price than the sale price. That buying back is exactly what can strengthen the squeeze.

Futures markets can also experience a short squeeze. Futures exist for different investment instruments, such as stock indexes, currencies, interest rate products, agricultural products, metals, and energy. If short sellers want to close their contracts in a rapidly rising market, they have to buy.

In some commodity futures, physical delivery also matters. In that case, the availability of actual deliverable commodities can be important. That works differently from a crypto contract that is settled in cash.

The crypto market has spot markets and derivatives markets. On the spot market, you buy and sell the crypto itself. With crypto derivatives, you trade contracts that track the price of crypto. Especially with crypto futures and perpetual futures, traders can go short with margin without first having to borrow the underlying crypto like in a classic stock short.

A perpetual future is similar to a futures contract, but it does not have a fixed expiration date. That makes these contracts popular for leveraged trading, but they also bring extra liquidation risk.

What Is the Impact of Short Squeezes in the Crypto Market?

A short squeeze can cause extremely fast price increases in the crypto market, especially if many leveraged traders are short.

If the price of a cryptocurrency rises, the losses on short positions increase. If a trader’s margin falls below the required level, a crypto exchange can automatically liquidate the position. The crypto exchange then closes the short position by buying back the asset. If many liquidations happen one after another, that can speed up the upward price move.

You see this especially with perpetual futures. These contracts use funding payments between longs and shorts to keep the contract price closer to the spot price. With negative funding, short sellers pay longs. That can make it more expensive to keep a short position open for a long time.

Negative funding by itself is not proof that a short squeeze is coming. At most, it is a signal that says something about the relationship between the price of perpetual futures, the spot price, and the payment flow between longs and shorts. The exact calculation and payment timing differ by crypto exchange.

Leverage makes the crypto market more sensitive to these kinds of moves. Forced liquidations can go together with sharp price swings, higher volatility, and bigger price gaps between the spot market and the derivatives market. Spreads can also widen. A spread is the difference between the price at which you can buy and sell a cryptocurrency right away.

How big the impact becomes depends on things like liquidity, the depth of the order book, the amount of leverage being used, and the platform’s liquidation rules. In a thin market, relatively small buy orders can already have a big effect on price.

Examples of Short Squeezes in the Crypto Market

A well-known example happened in October 2019. Bitcoin’s price rose from around $7,400 to more than $10,000 in about 24 hours. Positive comments from Chinese President Xi Jinping about blockchain created optimism in the market. The unexpected rise forced many short sellers to close their positions, which pushed the price even higher.

Another example followed in July 2023, after a U.S. judge made a partly favorable ruling for Ripple in the lawsuit against the SEC. XRP’s price rose from about $0.47 to $0.87 within a few hours. Around $33 million in short positions were liquidated. These liquidations created extra buying pressure and strengthened the rapid price increase.

A major short squeeze also happened in October 2023 around Bitcoin. Optimism about the possible approval of U.S. spot Bitcoin ETFs pushed the price above $34,000. Within 24 hours, more than $220 million in Bitcoin short positions were liquidated. Closing these positions created extra buying pressure and strengthened the price move.

These examples show that a short squeeze often starts with an initial price increase, for example because of positive news or an unexpected shift in market sentiment. That puts short sellers under pressure, after which liquidations and short covering can further strengthen the price move.

How Do You Spot a Possible Short Squeeze?

You can never predict a short squeeze with certainty. But you can look at different signals that show many short sellers are vulnerable. That means they may have to buy quickly if the price starts rising.

In stocks, you can first look at short interest. This is the number of shares that have been sold through a short position and have not yet been bought back. A high short interest means many traders still have an open short position. If the price then rises sharply, these traders may close their positions to limit further losses. To do that, they have to buy shares, which can create extra buying pressure.

A high short interest by itself is not proof that a short squeeze is coming. The chance of extra buying pressure becomes greater mainly when several signals appear at the same time:

• the price rises quickly and clearly;
• trading volume is high or increases quickly;
• many short positions are open;
• there are few shares available to borrow or trade;
• buying demand stays strong for a longer period.

It is also important not to confuse short interest with daily short-sale volume. Short interest shows how many short positions were still open at a specific measurement point. Daily short-sale volume only shows how many shares were sold through short transactions that day. It does not tell you how many of those positions were later closed.

In the crypto market, you can look at similar signals. Important data includes price movement, trading volume, open interest, liquidations, funding, and liquidity.

Open interest is the total value or total number of futures and other derivatives contracts that are still open. High open interest shows that many positions are active in the market. But from that alone, you cannot directly tell how many traders are short or at what price their positions will be liquidated.

Liquidation data shows how many positions crypto exchanges have automatically closed. When the price rises and more and more short positions are liquidated, that can be a sign that a short squeeze is already underway.

The funding rate can also provide extra information. These are periodic payments between traders with long and short positions in perpetual futures. With negative funding, short sellers usually pay traders with long positions. That can suggest there is relatively a lot of pressure on the short side of the market.

Funding alone is not a reliable predictor. The funding rate may only change after the price has already started moving. So use it together with other data, not as a standalone signal for what the price will do next.

In short, you do not recognize a possible short squeeze by one fixed number. It is about a combination of many open short positions, a rising price, increasing trading volume, and limited liquidity. Even if all these signals are present, a short squeeze is still only a possibility. It is not certain that a chain reaction of forced liquidations will happen.

What Is the Difference Between a Short Squeeze and a Long Squeeze?

A short squeeze pushes the price up, while a long squeeze can pull the price down.

In a short squeeze, traders are short. If the price rises, they take losses. Closing their position means buying, and that buying pressure can strengthen the rise even more.

In a long squeeze, the opposite happens. Traders are long and expect the price to rise. If the price drops sharply, their losses increase. To close, they sell their position. That extra selling pressure can strengthen the drop.

With margin positions, the pressure works the same way on both sides. If the loss becomes too large and the margin no longer meets the requirements, the trader may have to add extra collateral or liquidation may follow according to the trading platform’s rules.

What Risks Does a Short Squeeze Bring?

A short squeeze brings risks for short sellers, but also for traders who buy only after the price has already risen sharply.

For someone with a classic uncovered short on stocks, the loss can theoretically grow without limit. In theory, a stock can keep rising forever. With futures and crypto perpetuals, positions are often margined or liquidated earlier, but that does not remove the risk of large losses.

A fast move can cause your position to be closed at a worse price than you expected. In a volatile market, execution can be less favorable and costs can rise. In some crypto derivatives, a deficit can even become larger than just the margin you deposited.

Buying during a squeeze is risky too. Once short sellers have mostly covered, the extra buying pressure can suddenly disappear. The price can then fall just as fast as it rose. So a squeeze is not a guarantee that the price will stay higher.

Leverage increases both possible profit and possible loss. With leverage, it only takes a relatively small price move against you for your margin to be at risk. The higher the leverage, the smaller that buffer usually is.

Also watch out for stop-loss orders. An order like that can help limit risk, but it is not a guarantee that you will exit at exactly the set price. In a fast-moving or illiquid market, execution can end up lower or higher than you expected.

The main risks at a glance:

• large and fast losses for short sellers;
• forced liquidation if margin is insufficient;
• worse order execution because of high volatility;
• a quick drop for traders who enter late;
• a higher chance of mistakes because of stress and fast-moving prices.

Conclusion

A short squeeze is simply an upward price move that can become stronger because short sellers have to buy to close their positions. That can happen voluntarily to limit losses, or it can be forced by margin rules and liquidations.

This mechanism exists in stocks and futures, and it also plays an important role in the crypto market with leverage and perpetual futures. Especially there, liquidations can follow each other quickly, causing prices to move sharply.

Do not treat signals like high short interest, open interest, or negative funding as certainty. They only provide context. If you trade in a market where a squeeze is possible, it is smart to pay extra attention to leverage, liquidity, and the risk of a fast reversal.