Market imperfections and the information content of implied volatility and realized volatility

Wong, W. K. and Tu, A. H. (2009) Market imperfections and the information content of implied volatility and realized volatility. Pacific-Basin Finance Journal, 17 (1). pp. 58-79. ISSN 0927-538X Available from:

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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.

Item Type:Article
Uncontrolled Keywords:market imperfections, implied volatility, realized volatility, volatility forecasts, reality check test
Faculty/Department:Faculty of Business and Law > Department of Business Management
ID Code:12167
Deposited By: Dr W. Wong
Deposited On:06 Jan 2011 09:40
Last Modified:07 Nov 2016 00:26

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