An Empirical Study of the Chinese A-share Market Based on the Fama-French Three-Factor Model

Abstract

In recent years, the international situation has been unpredictable, changes in the economic environment have profoundly affected people's psychological expectations, and the securities market has experienced different volatility, which brings challenges to the validity of the Fama-French three-factor model. Based on this model, this paper selects 20 stocks in the Chinese A-share market, divides them into six portfolios according to their size and book-to-market ratio, conducts a regression analysis of monthly returns from August 2017 to July 2022, and then verifies the explanatory power of the market factor, size factor, and book-to-market ratio factor on the excess returns of the stocks. The results demonstrated that the three factors can partially account for the variation in returns, with SMB having a more significant impact on small-cap companies and HML on firms with a high book-to-market ratio.