3. $HOOD - This one stop shop for everything investing is one of the most widely used brokerages around. 

Their CEO, Vlad is one of the most visionary people in money with new features being launched it seems like every week.

They make money on order flows and fees.

They recently launched a gold credit card, subscription service and election betting. They also revamped their professional trading platform and visuals.

I believe Robinhood is poised to grow MASSIVELY over the next 5+ years based on their new growth levers.