I'm looking to create a list of highly volatile stocks, or stocks that have massive swings in price over the long term. My ultimate goal is to put a small part of my portfolio into these stocks when they are at the lower end of their historical range (5-8 years) and patiently wait for them to hopefully skyrocket again. Then sell and repeat when they inevitably crumble again. My main theory is that I risk minimal money for potentially exponential gains in a 5-10 year time period. I will sell half the shares if it doubles and the remaining shares are basically playing with house money. When I sell the remaining shares will just depend on the situation. Below are a few examples but I'm looking for more.
PLUG: 5 year range is about $1-$40. My cost basis is about $2.
HIMS: 2 year range is roughly $14-$60. I have bought and sold this a few times over the past 3 years. I sold half during a recent spike. My current shares were purchased at about $16.
NVAX: I don't currently own this, but have in the past. This had a crazy spike during Covid, went above $200, but has traded below $5 in the last couple of years.
Any suggestions for my list or strategy? It doesn't matter to me right now what the current prospects are or if it is at a high or low. I just want to create a watchlist for these types of stocks and look for opportunities in the future.