Durand, Robert B.; Lan, Yihui; Ng, Andrew - In: Global Finance Journal 22 (2011) 2, pp. 130-153
Pettengill, Sundaram, and Mathur (1995) respond to the prima facie failure of the standard CAPM and propose a conditional beta model by segmenting the market into two states – up markets (where the market excess return rm–rf is positive) and down markets (where rm–rf is negative). We...