Peter Lynch is a renowned American investor and mutual fund manager, best known for managing the Fidelity Magellan Fund from 1977 to 1990. Under his leadership, the fund achieved an average annual return of 29%, making it one of the most successful mutual funds in history. Lynch is also recognized for his investment philosophy, which emphasizes thorough research and investing in what you know. In addition to his successful fund management, Lynch is the author of several influential books, including One Up On Wall Street and Beating the Street. These works provide insights into his investment strategies and encourage individual investors to take an active role in managing their portfolios. Lynch's approach has inspired many to adopt a more informed and personal investment style.