Studies In China Stock Market On The Short-term Fluctuations Of Stock Price Impacted By Information Release

The impact of stock prices is a variety of factors, the financial experts, economists, business managers and investors in the stock market are using various methods from different angles of stock price formation and the reasons for the change of price. A lot of long-term research formed the theory of stock prices and the associated theory. In this paper, on the basis of previous studies, the use of statistical methods in light of China's stock market and the status of specific data, analysis of information released to the stock prices of short-term impact.The first chapter is the Introductions. A summary of the domestic and foreign stock prices theory, and on this basis, made the significance of this research, methods and innovation. Chapter Two is the article on the theoretical basis. With the existing stock of investment theory and effectiveness of the stock market hypothesis, analysis of information on the impact of the reasons for the stock price. The article should use statistical methods to study, so in some theoretical foundation also introduced a statistical analysis of stock prices in the study of the situation. Chapter There is the preparatory work. Including information data sources, information classification factors, assumptions and model-building.Chapter Four is the main part of the study, classified the published information on the impact on stock prices. Chapter Five of the study done a summary of the results, emphasized the value of research. In the final point out the problems and lacks in the research work. To establish the direction for the follow-up study of the research and put forward sound proposals.Study founds that: published financial statements showed that stock returns better, in the short term disclosure statements can be more extraordinary gains, but relatively poor performance of the company can not; company mergers and acquisitions after the publication of information, will bring a extraordinary short-term gains, but will soon fall even more negative earnings, this phenomenon can be used insider trading to explain the existence; interest rate changes and other policy information for all sectors of the different effects, some industries can be Extraordinary gains and some have not. The focus of this research is concerned about the short-term fluctuations in stock prices after the announcement of the information. This short-term effect, does not consider the information contained in the contents of the companies operating efficiency of the real changes, just because the news to stimulate investors to make decisions and produce. Such a strong short-term phenomenon can be copied, the master of its investors, especially short-term investors have the operation of guiding significance.