Comment by paulpauper

Ameritrade is a really bad broker. excessively high fees..all sorts of shady stuff with option order fill. Tons of online complaints. I have not used Robinhood but I cannot imagine it being worse than TDAmeritrade or any broker being worse than TDAmeritrade. If you trade with sums larger than $50k, use a professional broker such as Interactive Brokers, which institutional clients use.