Social media has had a significant impact on stock market volatility in recent years. This is because social media platforms allow information and opinions to spread rapidly, which can lead to sudden shifts in investor sentiment.

One of the most notable examples of the impact of social media on stock market volatility was the GameStop short squeeze in early 2021. A group of retail investors on the Reddit forum r/WallStreetBets coordinated to buy shares of GameStop, a struggling video game retailer. This led to a surge in demand for GameStop shares and caused the stock price to skyrocket. The short squeeze wiped out billions of dollars in losses for hedge funds that had been betting against GameStop.

The GameStop short squeeze was just one example of how social media can be used to manipulate stock prices. In recent years, there have been a number of other cases of social media users coordinating to buy or sell shares of particular stocks. This type of activity can lead to increased volatility in the stock market.

Social media can also impact stock market volatility by spreading misinformation and rumors. For example, a false rumor about a company's financial performance could lead to a sell-off of its shares. Or, a positive tweet from a celebrity about a particular stock could lead to a surge in demand for that stock.

Overall, social media has had a mixed impact on stock market volatility. On the one hand, it can make the market more efficient by allowing information to spread more quickly. On the other hand, it can also lead to increased volatility due to the spread of misinformation and the manipulation of stock prices.