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The ad hoc Black-Scholes (AHBS) model is one of the most widely used option valuation models among practitioners models. The main contribution of this study is methodological. We have two main results: (1) we make the empirical observation that typically the call and put sneers are discontinuous...
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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 …
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