NIO off and running. Personally my strategy is as follows.
I am swing trading stocks, holding a few days to a few months depending on how they move. My goal in this extended market is to find stocks on breakout and get 10-20% gains and limit losses to 5-10%. This allows me to only have to be only right 50% of the time and still make profit and grow my account size.
NIO is up 20% for me in a few weeks. I will sell 50% of my position this morning and put the rest of the shares with a stop market loss at Friday's high of $59. This will guarantee me a nice profit and avoid downside risk and capital loss, which I need to make more trades on stocks breaking out.
This book has revamped my thinking on individual stock investing. I recommend it highly.
https://www.amazon.com/Think-Trade-L...s%2C221&sr=8-5
Long term investing in my 401k and IRAs is a much different story. I simply rebalance 1-2x per year and don't do any of this.