The Riney Family – $3.5 Billion

Not only is the Riney family one of the richest families in America, but they also command the Scottrade empire. Founder Rodger O. Riney, who was born in the 1940s, developed the company that was later bought by TD Ameritrade. What’s more, his first interaction with the stock market was when his grandparents gave him ten shares of stocks.

Back in the 1970s, Riney decided to start Scottsdale Securities. At that moment, Scottsdale provided trades at a lower-commission. Just a decade later, Riney opened another branch in St. Louis. As of today, the company was renamed Scottrade and it is known as a great company to work for.