In the stock market, the risk of a speech can make two explanations: one for property risk, a psychological risk. Just to get involved in the stock market, no one will be able to avoid these two risks. So why should investors take risks? The simplest and most correct explanation is: To obtain a high return on investment. For most investors, the risk ﹂means﹁ extent they might be stricken losses, as well as the magnitude of the stock price may fall. It refers to the degree of uncertainty that the expected rate of return of assets. It refers to the possibility of investment losses suffered, usually measured by price volatility.