Dynamics of Biofuel Stock Prices: A Bayesian Approach

Xiaodong Du (), Dermot Hayes () and Cindy Yu

Staff General Research Papers from Iowa State University, Department of Economics

Abstract: We use Bayesian Markov Chain Monte Carlo methods to investigate the linkage between the volatility of ethanol security prices and the uncertainty surrounding the profitability of ethanol production and the price variations of non-ethanol energy securities. The joint evolution of return and volatility is modeled as a stochastic process that incorporates jumps in both return and volatility. While a strong and significant correlation is found between the volatility of ethanol securities and profit uncertainty from June 2005 to July 2008, the dynamic pattern of ethanol stock volatility is strikingly similar to that of the S&P 500 energy sector index in the more recent period. Our evidence lends support to the findings in the literature on rational learning from uncertainty in determining the equity price and volatility during the adoption and development of a technological innovation.

Keywords: jumps; rational learning; stochastic volatility; technological innovation. (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-ene and nep-fmk
Date: Written
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Related works:
Working Paper: Dynamics of Biofuel Stock Prices: A Bayesian Approach (2009)
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Persistent link: http://EconPapers.repec.org/RePEc:isu:genres:13113

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