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16:00) generally increases the variability of implied volatility spreads between puts and calls. In addition, it results … in considerable distortions at the outbreak of the COVID-19 pandemic and strongly affects aggregate implied volatility …
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represented by historical volatility measures, variances etc. In contrast, using option prices allows us to study uncertainty in …
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In this research study, we develop a new measure based on the option market to address the information role of earnings announcement on uninformed traders. Enlightened by previous theoretical work by Kim and Verrecchia (1991, 1994) and empirical findings in Patell and Wolfson (1979, 1981), our...
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