nep-cis New Economics Papers
on Confederation of Independent States
Issue of 2012‒07‒01
one paper chosen by
Alexander Harin
Modern University for the Humanities

  1. Speculative bubbles in recent oil price dynamics: Evidence from a Bayesian Markov-switching state-space approach By Marc Lammerding; Patrick Stephan; Mark Trede; Bernd Wilfling

  1. By: Marc Lammerding; Patrick Stephan; Mark Trede; Bernd Wilfling
    Abstract: Motivated by repeated spikes and crashes during previous decades we investigate whether the heavily financialized market for crude oil has been driven by speculative bubbles. In our theoretical modeling we draw on the convenience yield approach in order to approximate the fundamental value of the oil price. We separate the oil price fundamental from the bubble component by expressing a standard present-value oil price model in state-space form. We then introduce two Markov-regimes into the state-space representation in order to distinguish between two distinct phases in the bubble process, namely one in which the oil price bubble is a stable process and one in which the bubble explodes. We estimate the entire Markov-switching state-space specification using an econometrically robust Bayesian Markov-Chain-Monte-Carlo (MCMC) methodology. Based on inferential techniques designed for statistically separating both Markov-regimes in the bubble process from each other, we find robust evidence for the existence of speculative bubbles in recent oil price dynamics.
    Keywords: Speculative bubbles, oil price, Markov-switching model, state-space model, Bayesian econometrics
    JEL: G10 G12 Q40
    Date: 2012–06

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