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Chinese Journal of Management Science ›› 2014, Vol. 22 ›› Issue (3): 20-25.

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GMM Estimation and Testing for B-CAPM Model

ZHANG Wei-dong, GONG Jin-guo   

  1. School of Statistics, Southwestern University of Finance and Economics, Chengdu 610074, China
  • Received:2011-10-09 Revised:2012-08-27 Online:2014-03-20 Published:2014-03-19

Abstract: B-CAPM model, one of development of capital asset price model (CAPM), should be more suitable to varying capital market. In this paper, firstly, the transform and theoretical implications from CAPM to B-CAPM are analyzed. Then using MLE, the zero-beta expected return of B-CAPM is calculated. Finally the estimation and testing for B-CAPM are constructed empirically using GMM by an example. The conclusion shows that B-CAPM fits to measure the risk and return in security market and to test the efficiency of security market. GMM is a more suitable method.

Key words: CAPM, B-CAPM, GMM, estimation and testing

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