system
A chat on subreddit /r/wallstreetbets
human
I've seen so many market fills at 2 dollars when the market is active at 7. The mm litterly fuck these guys sideways for massive losses. It's amazing to watch on spx

gpt
that's why i dont trade spx or ndx. 
  
 those machines will play games with you.  oh you want a fill at mid price? nah.  Keep bumping down and down and down until you're at the original bid/ask, but now that moved too. 
  
 Shit volume is the problem