After his 1983 football season with Dartmouth College, Moglia decided to start a second career on Wall Street. He left coaching after 16 years and enrolled in the Institutional MBA training program at Merrill Lynch. A total of 26 participants – 25 MBAs and Joe, a football coach.
He became the most successful rookie salesman in the company's history, and quickly quickly moved through the ranks – helping to develop a new commission structure that is still used today. He became the head of global fixed-income sales and was promoted to head of municipal lending.
Moglia spent 17 years at Merrill Lynch, where he was a member of the executive committees for both the institutional business and the private client business. Moglia was responsible for all investment products, the insurance company, the 401(k) business and the middle-market business.
In 2001, after 17 years at Merrill Lynch, Joe accepted the chief executive officer role at Ameritrade Holding Corp (now TD Ameritrade).