Robinhood has been running a promotion to attract assets, offering a 1% bonus for transferring assets from another brokerage account into a Robinhood account. There is no limit to the amount that can be transferred, and the bonus is deposited into the customer's brokerage account when the transfer is completed. In other words, if you are a billionaire and transfer $1B into Robinhood, you will earn a $10M bonus instantly. It’s basically crypto level free money.