10 Fastest Growing Mutual Funds in 2025

3. American Funds Growth Fund of Amer A (NASDAQ:AGTHX)

Ten year Gain: 14.04%

Year to Date Gain: 6.66%

American Funds Growth Fund of Amer A (NASDAQ:AGTHX) is a unique mutual fund that deploys multi-manager systems. Its managers independently run a portion of the fund’s assets, whereby they are able to combine diverse investment perspectives while focusing on high-quality growth companies. Over the last ten years, the fund’s team of twelve portfolio counsellors has produced excess returns of 2.1% per year over its benchmark. The strategy of using multiple portfolio counsellors has produced better risk-adjusted returns.

American Funds Growth Fund of Amer A (NASDAQ:AGTHX) has generated an average annual return of 14% over the past ten years. Likewise, it is up by about 6.66%  year to date and returned 14.04% over the past 10 years, affirming why it is one of the fastest-growing mutual funds in 2025. In addition to solid returns, the fund’s competitive edge stems from its low expense ratio of 0.62%, given the active management strategy.