The spikes in put options occurred on days that were uneventful for the airlines and their stock prices.
On Sept. 6-7, when there was no significant news or stock price movement involving United, the Chicago exchange handled 4,744 put options for UAL stock, compared with just 396 call options -- essentially bets that the price will rise. On Sept. 10, an uneventful day for American, the volume was 748 calls and 4,516 puts, based on a check of option trading records. [SIZE=-1]
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Bloomberg News reported that put options on the airlines surged to the phenomenal high of 285 times their average.
Over three days before terrorists flattened the World Trade Center and damaged the Pentagon, there was more than 25 times the previous daily average trading in a Morgan Stanley "put" option that makes money when shares fall below $45. Trading in similar AMR and UAL put options, which make money when their stocks fall below $30 apiece, surged to as much as 285 times the average trading up to that time. [SIZE=-1]
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