Thanks for sharing your insights, Brian.
You asked for opinions. There's no shortage of those, are there?
There are many factors involved in how one approaches this. One's tolerance, goals, understanding, etc., are all factors.
For the trader, technical analysis is a must. Being able to discern the mood of the market is very difficult, with few learning to do it well. Learning to trade based on that information is even more elusive.
But, yeah, for the investor, finding the winners can be quite different. Still, one of the toughest skills is learning when to exit.