Überprüfung von Gültigkeit und Annahmen der Friedman These für Rohstoffmärkte
AbstractThe 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.
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Bibliographic InfoPaper provided by Vienna University of Economics, Department of Economics in its series Department of Economics Working Papers with number wuwp079.
Date of creation: Jul 2002
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unstable commodity prices; Friedman thesis; speculation; stabilization; temporal independence;
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- Q00 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - General - - - General
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