system
A chat on subreddit /r/wallstreetbets
human
Do you use RH for that? The collateral is insane!

gpt
I use TD, but like garynk said, the way they all calculate buying power &amp; margin is virtually the same. 
  
 I consider my entire stock portfolio to be collateral for the puts that I sell. My personal rule is that even in the worst possible scenario where all of my puts get exercised, I could sell all of my stock and pay for it.  
  
 But I use the cash that I get from selling safe puts to buy FD calls on tesla. It's working out so far.