Stock trading on the E*TRADE app. Video Duration 1:44. 1:44. In this short video, we'll show you how to trade stock using the E*TRADE app. Load More. alerts to stay informed of changes in the price of options and the underlying; Adopting one of our mobile apps so you can access the markets wherever you are Seize opportunities anytime, anywhere with a choice of two full-featured mobile trading apps built from the ground up for traders and investors on the go.