Fidelity Magellan Fund

The Fidelity Magellan Fund (Mutual fund: FMAGX) is a U.S.-domiciled mutual fund from the Fidelity family of funds. It is perhaps the world's best-known actively managed mutual fund, known particularly for its record-setting growth under the management of Peter Lynch from 1977 to 1990. On January 14, 2008, Fidelity announced that the fund would open to new investors for the first time in over a decade.

By the end of the 20th century the Magellan Fund had well over $100 billion in assets under management. For quite some time it was the single largest mutual fund in the world until April 2000, when it was displaced by Vanguard's S&P 500 index fund.