Research on Stock Market Volatility
Ting Liu, Xiaoying Huang, PhD

Abstract
In the financial market, the stock market has a very important position, the status of the stock market influence and reflect a country's level of economic development and the stable state, so the stock market price and income volatility has been the focus of research scholars. Based on the early efficient market theory, the stock market price fluctuation in the financial market is random and there are no rules to follow. All the information is reflected in the price. But along with the continuous development of empirical research, found that the stock market index is not random, in theory, because the market itself is not fully effective, the information can't be fully reflected in the price. So the stock market price fluctuations have regularity and some unique characteristics, in this paper, the data source is Shanghai composite index 2007/12/31-2018/3/28 stock closing price, trying to study volatility characteristics of China's stock prices and yields, found that yield a wave agglomeration and long memory, and volatility is affected by the policy and global economic conditions, and provide policy Suggestions to perfect the financial supervision and regulation.

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