The Theoretical Analysis And Empirical Analasis Of A Share's Stock Revenue In The Shanghai Stock Exchange Based On Three Factors'modle

With the development of finance market in our country, the factors having an impact on investment behavior and return of stocks came to be more complex .To get a thorough understanding of these factors will have a far-reaching significance in establishing a healthy running mechanism,improving the quality of listed companies and providing investors with reliable information and scientific guidance.On the basis of that, we have an empirical research on the possible factor which influencing stock returns of our companies listed in ShangHai stock market from micro aspect. The stocks of all listed companies in Shanghai A-share market as a sample, according to two risk factors of book-to-market value and market value,together with the powerful filter function of Excel, we get nine stock portfolios which shows obvious characteristics;We examines the relationship between the return of stock and three factors:book-to-market value factor, scale factor and the market factor through FF- three factors model,as well as the inspection method arising from Econometrics ;Further, we compare and analysis the difference in the return of stock portfolios after the consideration of industry.In the selection of approach on assigning group , we show a comparation of economic meaning of each goup by two different approach .On the basis of B-M ,we find there is a corsponding relation between the value scope and define different groups ,in order to unify financial risk of each combination of stocks.In combination of empirical analysis, there are obvious book-to-market effect and scale effect in China stock returns. Three factors model in this paper does not have stability by the inspection of recursion residual figure and CUSUMSQ test. Through the recursive regression, we give reasonable explanations on the regularity of sensitive coefficient sequences of these two factors in each group.In the the comparison and analysis after the consideration of industry factor , there is no book-to-market effect and scale effect on the return of stock portfolio in our country.The possible reason is that the count of listed companies becomes less and less with the regard of industry , the lack of dispersion on data lead to the non ideal regression result.