I'm pretty sure it would be illegal for RobinHood to actually delete information about you after you are a customer. They are required to keep a history of you

I'm pretty sure it would be illegal for RobinHood to actually delete information about you after you are a customer. They are required to keep a history of your activity and transactions in case they get sued, audited or come under investigation. I do not know what the actual retention period would be but it's certainly longer than just a few years.