While passively managed index funds only constituted ** percent of the total assets managed by investment companies in the United States in 2010, this share had increased to ** percent by 2025. Active mutual funds are funds of pooled money managed by a fund manager, who actively researches new investment opportunities and amends the fund's portfolio accordingly. This contrasts to passive funds, where the fund's portfolio is (usually) determined by an external stock market index such as the Dow Jones Industrial Average or the FTSE 100.
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ICI. (April 27, 2026). Distribution of active and passive investment funds in the United States in 2010 and 2025, by type [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 24, 2026, from /statistics/1262209/active-passive-investment-funds-usa/
ICI. "Distribution of active and passive investment funds in the United States in 2010 and 2025, by type." Chart. April 27, 2026. ÌÇÐÄÆÆ½â°æ. Accessed July 24, 2026. /statistics/1262209/active-passive-investment-funds-usa/
ICI. (2026). Distribution of active and passive investment funds in the United States in 2010 and 2025, by type. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 24, 2026. /statistics/1262209/active-passive-investment-funds-usa/
ICI. "Distribution of Active and Passive Investment Funds in The United States in 2010 and 2025, by Type." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 27 Apr 2026, /statistics/1262209/active-passive-investment-funds-usa/
ICI, Distribution of active and passive investment funds in the United States in 2010 and 2025, by type ÌÇÐÄÆÆ½â°æ, /statistics/1262209/active-passive-investment-funds-usa/ (last visited July 24, 2026)
Distribution of active and passive investment funds in the United States in 2010 and 2025, by type [Graph], ICI, April 27, 2026. [Online]. Available: /statistics/1262209/active-passive-investment-funds-usa/