I generally wouldn't be more likely to short because of a 10b5-1 sale. On the other hand, if all insiders were selling large amounts on a regular basis via 10b5-1 plans, I might be more inclined to short. (This is what GILD executives have done for several years.)
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”
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