I have read three other threads about employee stock purchase plans (I get to buy company stock at a 15% discount) and come to the conclusion that I should sell most of my shares immediately after they are posted to my brokerage account.
My question is, if thousands of employees have the same plan as me and sell the stock on the same day four times a year, will the share price dip? Would it be beneficial, on average, to wait a certain amount of time (days? weeks? months?) before selling?