[grive]

If it was the answer, then RH could have instead only forbidden margin trades and restricted to cash.

Additionally, other retail brokers selling to Citadel Capital have done the exact same (Schwab comes to mind, but not only).

Other brokers however (fidelity), have not. If the short squeeze is to happen tomorrow, this seems an unlikely coincidence that those retail brokers affiliated with Citadel Capital tool positions that would ultimately deflate the stock.

I don't see how GP can assure that no short sellers is behind those moves.