1. If you are a futures practitioner.

You can open a securities account and buy and sell stocks, but you can't open a futures account.

2. If you are a securities practitioner.

You can open a futures account, but you can't open a securities account

Simply put, you can't open an account in any bank, you must remain independent, but you can open an account in another bank.

I am a securities practitioner, ha, I opened a futures account.