Alt, Raimund (Department of Economics and Finance, Institute for Advanced Studies, Vienna) Fortin, Ines (Department of Economics and Finance, Institute for Advanced Studies, Vienna) Weinberger, Simon
Abstract
This paper questions traditional approaches for testing the day-of-the-week effect on stock returns. We propose an alternative approach based on the closure test principle introduced by Marcus, Peritz and Gabriel (1976), which has become very popular in Biometrics and Medical Statistics. We test all pairwise comparisons of daily expected stock returns, while the probability of committing any type I error is always kept smaller than or equal to some prespecified level a for each combination of true null hypotheses. We confirm day-of-theweek effects for the S&P 500, the FTSE 30 and the DAX 30 found in earlier studies, but find no evidence for the 1990's.
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Publisher Info
Paper provided by Institute for Advanced Studies in its series Economics Series with number
127.
Find related papers by JEL classification: C12 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: General - - - Hypothesis Testing C20 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - General G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies
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