As We All Know Stock Market Work On Supply And Demand.

So Major Reason Behind The stock Price fall or rise is good news or bad news. Sometimes if bad news becomes viral In the market people start to sell and this causes the fall in price as demand increases.

If good news became viral on the market people would have started to buy more and more shares of certain companies which would increase the price of shares because of demand.

Note:- If bad news(wrong news) is about a company with good and right financial statements will increase in a very short time.