Fidelity Investments may be a family operation, but the Boston-based fund management firm is glad to bring everyone in. One of the largest asset managers in the world, Fidelity features over 400 mutual funds, including well-known funds such as the Fidelity Contrafund, Fidelity Equity Income Fund as well as Fidelity Magellan, once managed by well-known manager Peter Lynch. Run by Boston's Johnson family since its founding in 1946, Fidelity also administers employee benefits programs and manages nearly $1.5 trillion.