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Market imperfections and the information content of implied and realized volatility

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  • Wong, Woon K.
  • Tu, Anthony H.

Abstract

The information content of option implied volatility and realized volatility under market imperfections are studied in the context of GARCH modeling and volatility forecasts of Taiwan stock market (TAIEX) returns. Consistent with most studies, we find that the Taiwan implied volatility index (TVIX) calculated from the TAIEX option prices contains most of the information, and that White's [White, H., 2000. A reality check for data snooping. Econometrica 68, 1097-1126] reality check test cannot reject the null hypothesis that the TVIX provides the best forecast. Possibly due to market imperfections, however, the incremental information content of realized volatility as well as daily returns cannot be ruled out. Finally, we also find that the information is found only in the most recent TVIX, indicating information is being efficiently impounded on the TAIEX option prices. This finding suggests that appropriately designed derivative products can alleviate the problems caused by market imperfections.

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Bibliographic Info

Article provided by Elsevier in its journal Pacific-Basin Finance Journal.

Volume (Year): 17 (2009)
Issue (Month): 1 (January)
Pages: 58-79

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Handle: RePEc:eee:pacfin:v:17:y:2009:i:1:p:58-79

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Web page: http://www.elsevier.com/locate/pacfin

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Keywords: Market imperfections Implied volatility Realized volatility Volatility forecasts Reality Check test;

References

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