Netflix stock has been trading in a more predictable wave pattern then most tech stocks at the moment, not saying it is predictable at all but judging from support levels where buyers stepped in and sellers sold, you can make an informed decision on when is it optimal to add or shed your holdings. Most optimal buy zone is between 460-492. From 493-502 is the last avaiable zone for optimal buying with selling going from 524 and up while the zone in between 503-523 is when you should just hold the stock