Joep Sonnemans () (CREED, FEWEC, University of Amsterdam)
Abstract
The main contribution of this study is the finding that round numbers can act as price barriers for individual stocks. In addition, a first step is made to explain this and the related phenomena of round number clustering by testing two competing hypotheses, using data from the Dutch stock market during 1990-2001. After January 1, 1999 stock prices were listed in euros, while guilders were still the currency of daily life until 2002. According to the aspiration level hypothesis investors will have target prices for the stocks they own. This hypothesis predicts that round number effects in guilders will only slowly disappear. The odd price hypothesis originates from cognitive psychology and marketing. Humans have to tendency to compare numbers digit by digit from left to right, and therefore consider an odd price of 19.90 as considerable less than 20.00. This hypothesis predicts an abrupt change in round number effects after January 1, 1999. The results reject the aspiration level hypothesis and are in line with the odd price hypothesis.
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Find related papers by JEL classification: G12 - Financial Economics - - General Financial Markets - - - Asset Pricing
References listed on IDEAS Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
De Long, J Bradford & Andrei Shleifer & Lawrence H. Summers & Robert J. Waldmann, 1990.
"Noise Trader Risk in Financial Markets,"
Journal of Political Economy,
University of Chicago Press, vol. 98(4), pages 703-38, August.
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