Random Walk or Mean Reversion: The Danish Stock Market Since World War 1

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Abstract

This paper contributes to the growing literature on mean reversion in stock markets by examining a newly constructed Danish data set for the period 1922-95. Variance ratio tests clearly reject the random walk hypothesis at the 2-year horizon, that is, the riskiness of a 2- year investment is significantly less than twice the risk of a 1-year investment. Variance ratio tests for 3- and 4-year horizons are not significant under conventional significance levels, whereas autocorrelation tests of the joint hypothesis that there is departure from random walk at all horizons tend to reject the random walk hypothesis and support the mean reversion hypothesis.
Original languageEnglish
Place of PublicationCopenhagen
PublisherDepartment of Economics. Copenhagen Business School
Number of pages13
Publication statusPublished - 1998
SeriesEPRU Working Paper Series
Number12
ISSN0908-7745
SeriesWorking Paper / Department of Economics. Copenhagen Business School
Number7

Cite this

Risager, O. (1998). Random Walk or Mean Reversion: The Danish Stock Market Since World War 1. Department of Economics. Copenhagen Business School. EPRU Working Paper Series, No. 12, Working Paper / Department of Economics. Copenhagen Business School, No. 7