system
A chat on subreddit /r/wallstreetbets
human
Good idea except  if the market  opens down and  you are down 70% making it back with winners gets harder if you cut wins early.

gpt
This is why you need to set it at a level you are comfortable with. If you can see yourself losing 70% that should be your cutoff. 
  
 The problem is that the market may keep going down and suddenly you're down 100%. You can never know