Coskewness, dividend yield and capital asset pricing

The coskewness and dividend yield effects on capital asset prices have been established in two separate literatures. Neither literature controls for the variable in the other, nor for other potentially confounding factors such as size of the firm and the January effect on returns. Using stock return data for 1969–1978, this study provides evidence of coskewness, size, yield and January effects on stock returns. Coskewness appears to be a surrogate variable for dividend yield. When yield is controlled for, the coskewness effect cannot be detected. Hence, the significance of coskewness seems to result from the presence of the uncontrolled factor, dividend yield.