Also known as USAA, the diversified financial services company, rose seven slots in the Fortune 500 ranks to its highest ranking ever. USAA provides banking and insurance offerings to U.S. military members and their families; it routinely scores at the top of customer-satisfaction surveys in an industry that isn't generally beloved by consumers. In 2019, USAA sold much of its investment-management business to Charles Schwab in a $1.8 billion deal.