Charles Schwab Corp. is the largest publicly traded brokerage business in the United States with $7.5 trillion of client assets, and is a leading service provider for financial advisors, among the top exchange-traded fund asset managers and one of the biggest banks.

"It would be fair to characterize Charles Schwab as a financial services supermarket," Michael Wong, director of North American equity research and financial services at Morningstar, told CNBC. "Anything that you want, you can find in Charles Schwab's platform."