Robinhood
Robinhood pioneered fee free trading, in true robinhood style.
Since Robinhood, all the big brokerages have followed, TD, Schwab etc.
I always wondered how Robinhood were able to offer free trading to the masses, especially as their valuation sky rockets.
I thought the business plan must be to up sell services and some data.
If you were trying to figure this out as well Howard explains all.