Überprüfung von Gültigkeit und Annahmen der Friedman-These für Rohstoffmärkte

Maria Stückler

Publication: Working/Discussion PaperWU Working Paper

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Abstract

The Thesis: Commodity prices are significantly more volatile than prices of industrial products. Production as well as non speculative demand of raw materials are subject to stochastic - sometimes even systematic - fluctuations, which get translated into pronounced price fluctuations by low short run price elasticities of demand and supply. Unstable prices as such provide an incentive to speculate; and - so the Friedman thesis - profitable speculation in itself has a stabilizing effect, since "speculation can be destabilizing in general only if speculators on average sell when the currency is low in price and buy when it is high". Temporal independence between speculative and non speculative activities is the only necessary condition Friedman considers. The counter argument: As can be shown however, even under the assumption of temporal independence speculation can have a destabilizing effect despite being profitable, if the non speculative excess demand is nonlinear. Moreover its precisely because of temporal interdependence on commodity markets, that speculative profits can even be achieved by destabilizing (stable) prices. The extreme volatility of commodity prices therefore may be partly caused by (profitable) speculation as well. (author's abstract)
Original languageGerman (Austria)
Place of PublicationVienna
PublisherInst. für Volkswirtschaftstheorie und -politik, WU Vienna University of Economics and Business
Publication statusPublished - 2002

Publication series

NameDepartment of Economics Working Paper Series
No.79

WU Working Paper Series

  • Department of Economics Working Paper Series

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