Are there Monday effects in Stock Returns: A Stochastic Dominance Approach

Yoon-Jae Whang, Young-Hyun Cho and Oliver Linton

FMG Discussion Papers from Financial Markets Group

Abstract: We provide a test of the Monday effect in daily stock index returns. Unlike previous studies we define the Monday effect based on the stochastic dominance criterion. This is a stronger criterion than those based on comparing means used in previous work and has a well defined economic meaning. We apply our test to a number of stock indexes including large caps and small caps as well as UK and Japanese indexes. We find strong evidence of a Monday effect in many cases under this stronger criterion. The effect has reversed or weakened in the Dow Jones and S&P 500 indexes post 1987, but is still strong in more broadly based indexes like the NASDAQ, the Russell 2000 and the CRSP.Keywords: Efficient Markets; stock market anomalies; subsamplingJEL Classification: C12, C14, C15, G13, G14

Date: 2006-09
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Journal Article: Are there Monday effects in stock returns: A stochastic dominance approach (2007)
Working Paper: Are there Monday effects in stock returns: a stochastic dominance approach (2006)
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