Robinhood is a US commission-free stock and crypto broker regulated by the SEC and FINRA, with SIPC protection on securities accounts. Its welcome offer is a free reward share, which for the large majority of new users is worth only a few dollars. It is available to US residents only.
Risk warning: Trading carries a high risk of losing money, especially with leveraged products such as CFDs. A bonus does not reduce that risk. Only deposit what you can afford to lose.
Robinhood
New US Robinhood customers who open and link an account get a free reward stock. For about 99% of people that share is worth $5, with a small chance of more, up to $200.