 Is momentum a self-fulfilling prophecy?Steven J. Jordan Quantitative Finance, 2014, vol. 14, issue 4, 737-748 Abstract: The author shows in a simple framework that momentum trading can exist in equilibrium and that momentum trading is profitable. A property of the model is that the relation between risk, reward, and the intensity of momentum trading provides a natural limit to the amount of momentum trading that will exist in equilibrium. Properties of the model fit the empirics well. First, the model captures in a parsimonious manner both short-term overreaction and long-term reversals. Second, it predicts that momentum and long-term reversals should be observed in any market where there is noise. Thus, the model gives theoretical support to the empirical evidence that these anomalies are not artifacts of data snooping and to the extant empirical evidence that these anomalies are pervasive. Momentum traders observe noise shocks and trade on it as information. This trading incorporates a predictive role to the noise. That is, if agents believe a past price change to be informative of future price changes and act on this belief, it will be true and trading on this belief will be profitable. Thus, momentum trading is a self-fulfilling action. Date: 2014 Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:taf:quantf:v:14:y:2014:i:4:p:737-748 Ordering information: This journal article can be ordered from DOI: 10.1080/14697688.2012.738928 Access Statistics for this article Quantitative Finance is currently edited by Michael Dempster and Jim Gatheral More articles in Quantitative Finance from Taylor & Francis Journals |
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