• Source: Short squeeze

In the stock market, a short squeeze is a rapid increase in the price of a stock owing primarily to an excess of short selling of a stock rather than underlying fundamentals. A short squeeze occurs when demand has increased relative to supply because short sellers have to buy stock to cover their short positions.




Overview


Short selling is a finance practice in which an investor, known as the short-seller, borrows shares and immediately sells them, hoping to buy them back later ("covering") at a lower price. As the shares were borrowed, the short-seller must eventually return them to the lender (plus interest and dividend, if any), and therefore makes a profit if they spend less buying back the shares than they received when selling them. However, an unexpected piece of favorable news can cause a jump in the stock's share price, resulting in a loss rather than a profit. Short-sellers might then be triggered to buy the shares they had borrowed at a higher price, in an effort to keep their losses from mounting should the share price rise further.
Short squeezes result when short sellers of a stock move to cover their positions, purchasing large volumes of stock relative to the market volume. Purchasing the stock to cover their short positions raises the price of the shorted stock, thus triggering more short sellers to cover their positions by buying the stock; i.e., there is increasing demand. This dynamic can result in a cascade of stock purchases and an even bigger jump of the share price. Borrow, buy and sell timing can lead to more than 100% of a company's shares sold short. This does not necessarily imply naked short selling, since shorted shares are put back onto the market, potentially allowing the same share to be borrowed multiple times.
Short squeezes tend to happen in stocks that have expensive borrow rates. Expensive borrow rates can increase the pressure on short sellers to cover their positions, further adding to the reflexive nature of this phenomenon.
Buying by short sellers can occur if the price has risen to a point where shorts receive margin calls that they cannot (or choose not to) meet, triggering them to purchase stock to return to the owners from whom (via a broker) they had borrowed the stock in establishing their position. This buying may proceed automatically, for example if the short sellers had previously placed stop-loss orders with their brokers to prepare for this possibility. Alternatively, short sellers simply deciding to cut their losses and get out (rather than lacking collateral funds to meet their margin) can cause a squeeze. Short squeezes can also occur when the demand from short sellers outweighs the supply of shares to borrow, which results in the failure of borrow requests from prime brokers. This sometimes happens with companies that are on the verge of filing for bankruptcy.




= Targets for short squeezes

=
Short squeezes are more likely to occur in stocks with relatively few traded shares and commensurately small market capitalization and float. Squeezes can, however, involve large stocks and billions of dollars. Short squeezes may also be more likely to occur when a large percentage of a stock's float is short, and when large portions of the stock are held by people not tempted to sell.
Short squeezes can also be facilitated by the availability of inexpensive call options on the underlying security because they add considerable leverage. Typically, out of the money options with a short time to expiration are used to maximize the leverage and the impact of the squeezer's actions on short sellers. Call options on securities that have low implied volatility are also less expensive and more impactful. (A successful short squeeze will dramatically increase implied volatility).




= Long squeeze

=
The opposite of a short squeeze is the less common long squeeze. A squeeze can also occur with futures contracts, especially in agricultural commodities, for which supply is inherently limited.




Examples


In May 1901, James J. Hill and J. P. Morgan battled with E. H. Harriman over control of the Northern Pacific Railway. By the end of business on May 7, 1901, the two parties controlled over 94% of outstanding Northern Pacific shares. The resulting runup in share price was accompanied by frenetic short selling of Northern Pacific by third parties. On May 8, it became apparent that uncommitted NP shares were insufficient to cover the outstanding short positions, and that neither Hill and Morgan nor Harriman were willing to sell. This triggered a sell-off in the rest of the market as NP "shorts" liquidated holdings in an effort to raise cash to buy NP shares to meet their obligations. The ensuing stock market crash, known as the Panic of 1901, was partially ameliorated by a truce between Hill/Morgan and Harriman.
In October 2008, a short squeeze triggered by an attempted takeover by Porsche temporarily drove the shares of Volkswagen AG on the Xetra DAX from €210.85 to over €1000 in less than two days, briefly making it the most valuable company in the world. Then-Porsche CEO Wendelin Wiedeking was charged with market manipulation but was acquitted by a Stuttgart court.
In 2012, the U.S. Securities and Exchange Commission charged Philip Falcone with market manipulation in relation to a short squeeze on a series of high-yield bonds issued by MAAX Holdings. After hearing that a firm was shorting the bonds, Falcone purchased the entire issue of bonds. He also lent the bonds to the short-sellers, and then bought them back when the traders sold them. As a result, his total exposure exceeded the entire issue of the MAAX bonds. Falcone then stopped lending the bonds, so that short-sellers could not liquidate their positions anymore. The price of the bonds rose dramatically. The short-sellers could only liquidate their positions by contacting Falcone directly.
In November 2015, Martin Shkreli orchestrated a short squeeze on failed biotech KaloBios (KBIO) that caused its share price to rise by 10,000% in just five trading days. KBIO had been perceived by short sellers as a "no-brainer near-term zero".
The GameStop short squeeze, starting in January 2021, was a short squeeze occurring on shares of GameStop, primarily triggered by the Reddit forum WallStreetBets. This squeeze led to the share price reaching an all-time intraday high of US$483 on January 28, 2021 on the NYSE. This squeeze caught the attention of many news networks and social media platforms.
In March 2022, a short squeeze was initiated on nickel contracts on the London Metal Exchange (LME). In the months prior, industrialist Xiang Guangda took a large short position on LME nickel, but a rise in nickel prices following the Russian invasion of Ukraine forced Guangda make significant purchases to cover his position, causing LME nickel prices to rise by around 250 percent. On paper this would've caused Guangda billions of dollars of losses, but the LME halted all trading on nickel contracts and reversed many of the trades which occurred during the squeeze, shielding Guangda from much of the loss.




See also


Short interest ratio
Stock market crash – a short squeeze is effectively a reverse crash




References






External links and sources


What is a Squeeze Play?
"Porsche crashes into controversy in the ultimate 'short squeeze'"

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