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A Partially Linear Approach to Modeling the Dynamics of Spot and Futures Prices

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Journal of Futures Markets

Published online on

Abstract

This paper considers the dynamics of spot and futures prices in the presence of arbitrage. A partially linear error correction model is proposed where the adjustment coefficient is allowed to depend nonlinearly on the lagged price difference. The model is estimated using data on the DAX index and the DAX futures contract. We find that the adjustment is indeed nonlinear. The linear alternative is rejected. The speed of price adjustment is increasing almost monotonically with the magnitude of the price difference. © 2014 Wiley Periodicals, Inc. Jrl Fut Mark