What is a Gamma Squeeze? A Look at GameStop’s Meteoric Rise

Written by Jeremy Lieber

April 20, 2023

When hedge funds shorted GameStop’s shares, Reddit day traders stepped up to the plate to take them on. What followed was nothing short of an epic battle that ended in GameStop’s shares exploding in value. But how did they pull it off? The answer lies in a phenomenon known as the gamma squeeze. In this blog, we’ll take a closer look at what caused GameStop’s shares to skyrocket and the impact of a gamma squeeze on the stock market.

What is a Gamma Squeeze?

A gamma squeeze refers to a phenomenon that happens when options traders buy a large number of low-premium call options in a stock. When demand for these options is high, the dealers who sold them are required to hedge their positions by buying the underlying stock. This buying pressure leads to a surge in the stock’s price, which creates even more demand for call options, causing a feedback loop that pushes the stock’s value even higher.

The gamma squeeze differs from other market squeezes in that it is not caused by a shortage of existing shares, but rather by the demand for options on the stock. Moreover, the dealers who sold the options are the ones creating the buying pressure that drives up the stock’s value, not short sellers or other investors.

So how do short sellers fit into the picture? Short sellers typically bet against stocks by borrowing shares and selling them in the hope of buying them back cheaper later on. When a gamma squeeze happens, the surge in the stock’s value forces short sellers to buy back the shares they sold at higher prices, leading to even more buying pressure that pushes the stock’s value even higher.

GameStop’s Skyrocketing Share Prices

In January 2021, Reddit day traders, coordinated on the WallStreetBets forum, began buying up large numbers of call options on GameStop’s shares, triggering a gamma squeeze. The result was a meteoric rise in GameStop’s stock price from $20 per share to over $400 in just a few weeks.

What made the GameStop saga so unique was the collective buying power of the Reddit day traders, who effectively worked together to thwart the short-selling strategies of the hedge funds. The success of the gamma squeeze depended on the coordination and persistence of the day traders to keep buying enough call options to trigger the squeeze.

In response to the buying pressure, hedge funds that had shorted GameStop’s shares were forced to buy them back at higher prices, resulting in billions of dollars in losses. The GameStop saga highlights the potential power of retail investors in the stock market and the role of derivatives like options in creating large-scale market movements.

Hedge Fund Losses

The recent events surrounding GameStop have highlighted the risks that come with hedge fund investments. Two hedge funds that bet against the video game retailer suffered massive losses as a result of the recent stock surge. Melvin Capital decided to close out its position in the stock after suffering a loss of around 53% in January. Similarly, Citron Research announced that it had closed out most of its position in the stock after facing losses of up to 100%. These losses serve as a reminder of the volatility and unpredictability of the stock market, and the importance of practicing sound investment strategies.

The Future of Gamma Squeezes

The recent GameStop gamma squeeze has caused a stir in the stock trading world, leaving many wondering about the potential consequences for the overall market. Some experts believe that this could be the beginning of a new trend in stock trading, with retail investors banding together to take on large institutional investors. However, others are concerned about the regulatory and ethical implications of such actions, including potential market manipulation and investor protection. As the dust settles from this unique event, it remains to be seen whether gamma squeezes will continue to be a force in stock trading or if they will fade into obscurity.

The GameStop saga demonstrated the power of a coordinated retail investor movement in the stock market, as well as the impact of a gamma squeeze on share prices. The collective buying power of Reddit day traders led to a meteoric rise in GameStop’s stock price, which caused major losses for hedge funds that had bet against the company. Understanding the mechanics of the gamma squeeze is key to understanding how options trading can impact the stock market, and how traders can coordinate to create market movements that challenge traditional investment strategies. While the GameStop saga may have been an anomaly, it has raised important questions about the power dynamics of the stock market and the potential for retail investors to influence market movements.

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