system
A chat on subreddit /r/wallstreetbets
human
MSFT max pain today is $130.  Quick buy zero day $135p for $2 right now and watch that turn into $500. 
  
 But in seriousness almost every one of my positions on quad witching fell at least 1% in the last 30 minutes before close, some much more.  So if you have calls that are highly green expiring in the next few weeks, I would sell.

gpt
Last quad witching, the volumes were fairly high, s&amp;p closed down 0.4% though.