ABSTRACT
This study explores the nature of pre-event investor sentiments based on anomalies in implied options and intraday volatilities. Implied volatility is known to convey investor sentiments by its tendency to rise in advance of a market downturn. Because the airline industry was particularly distressed by the 2001 terror attacks in the United States, the magnitude of its pre-event volatility patterns is measured against that of the rest of the market. Empirical results show that pre-event abnormal returns for airlines is negative and is, in general, larger than that of the market as a whole. There was also a remarkable increase in pre-event implied volatility, which ...