Commodity price dynamics and the nonlinear market impact of technical traders: empirical evidence for the US corn market

Frank Westerhoff and Stefan Reitz

Physica A: Statistical Mechanics and its Applications, 2005, vol. 349, issue 3, 641-648

Abstract: We develop a simple model with technical and fundamental traders to explain the cyclical motion of commodity prices. The crucial element of our model is a nonlinear market impact of technical traders: Estimation of our STAR-GARCH model using monthly US corn price data reveals that technical traders increasingly enter the market as booms or slumps enlarge. One reason may be that they only gradually learn about the emergence of persistent price trends. The behavior of trend-extrapolating speculators obviously enforces mispricings and thus contributes to cyclical motion as observed in actual commodity markets.

Keywords: Commodity markets; Econophysics; Technical and fundamental analysis; Nonlinearities; STAR-GARCH approach (search for similar items in EconPapers)
Date: 2005
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Citations: View citations in EconPapers (60)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:349:y:2005:i:3:p:641-648

DOI: 10.1016/j.physa.2004.11.015

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