system
A chat on subreddit /r/wallstreetbets
human
You may transfer open positions between brokerage accounts without incurring a taxable event via ACATS, the Automated Customer Account Transfer System.  
  
 Robinhood charges $75 for this service, but TD Ameritrade (and most other brokers, should you choose to open an account with them via an ACATS transfer) will cover this fee for you.

gpt
Do I initiate the transfer from the RH or TD side