$Amazon.com(AMZN)$ Always sell before earning date, then buy back immediately after the drop. Did that the last 4 quarters. Good report, bad report, price always dumps. Then it recovers over the next few weeks.

Sold half my shares on 10/28, bought them back the next two days at 2 to 4% discount (~$3350).

Same thing 7/29, sold at $3600, then 7/30 dropped 6% and bought back around $3350.

Again 4/29, sold $3490, then 5/3 and 5/4 at discount.

Good earnings or bad, people sell AM.