<human>:  Can you explain why the stock market is so volatile?
<bot>: The stock market is so volatile because it is largely driven by investor sentiment. Investors move in and out of stocks quickly, often in reaction to news or rumors, which can cause large swings in the value of individual stocks and the overall market. Additionally, factors such as economic activity, geopolitical events, corporate earnings, and changes in interest rates can also cause sudden and significant changes in the stock markets.