Information Content of Implied Probability Distributions: Empirical Studies of Japanese Stock Price Index Options
AbstractEmpirical studies of the information content of option prices have focused on exploring whether implied volatility contains useful information regarding the future fluctuation of underlying asset prices. If expectation formation in the option markets reflects all the currently available information regarding future price movements, option prices will be useful in forecasting the price fluctuation of underlying assets. This paper extends such an analytical framework to implied probability distribution as a whole and examines its information content by using Japanese stock price index option data (on a daily basis) from mid-1989 to mid-1996. To this end, the following questions are examined: (1) whether the implied probability distribution is a good forecast of the subsequently realized distribution of stock price fluctuations, and (2) whether a leads and lags relationship exists between stock price changes and changes in the shape of the implied probability distribution. The estimation results show that (1) the implied probability distribution contains some information regarding future price movements, but its forecasting ability is not superior to that of the historical distribution, and (2) the shape of the implied probability distribution not only responds to stock price changes but also contains some information on forecasting stock price changes. However, it should be noted that such results are highly sensitive to the choice of sample period, suggesting that the information content depends on macroeconomic and financial market conditions. Therefore, the information contained in an implied probability distribution is difficult to interpret automatically as an information variable for monetary policy, and further studies are needed on how to make use of information contained in implied probability distributions.
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Bibliographic InfoArticle provided by Institute for Monetary and Economic Studies, Bank of Japan in its journal Monetary and Economic Studies.
Volume (Year): 19 (2001)
Issue (Month): 3 (November)
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Find related papers by JEL classification:
- G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
- G13 - Financial Economics - - General Financial Markets - - - Contingent Pricing; Futures Pricing
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- Wilkens, Sascha & Roder, Klaus, 2006. "The informational content of option-implied distributions: Evidence from the Eurex index and interest rate futures options market," Global Finance Journal, Elsevier, vol. 17(1), pages 50-74, September.
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- Amadeo Alentorn & Sheri Markose, 2006. "Removing Maturity Effects of Implied Risk Neutral Densities and Related Statistics," Economics Discussion Papers 609, University of Essex, Department of Economics.
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