American Century Mid Cap Value Fund (AMVRX) is an open-end mutual fund managed by American Century Investments that seeks total return by investing primarily in equity securities of mid-capitalization value companies, emphasizing high-quality issuers with lower price-to-book ratios and forecasted growth values relative to peers; it benchmarks performance against the Russell Midcap Value Index. The fund offers multiple share classes including R Class (AMVRX), Investor Class (ACMVX), I Class (AVUAX), R5 Class (AMVGX), and R6 Class (AMDVX), with varying minimum investments and expense ratios; R Class shares target employer-sponsored retirement plans, while Investor Class shares are available directly to individuals with minimums of $1,000 for IRAs and $2,500 for non-retirement accounts, waivable via automatic investments. American Century Investments, the fund sponsor founded in 1958 and headquartered in Kansas City, Missouri, operates globally with offices in New York, London, Hong Kong, and Sydney, serving retail and institutional investors in the U.S. mid-cap value segment through active management strategies focused on volatility reduction and long-term growth. Recent developments include a restated management fee schedule effective August 1, 2019, which lowered costs and would have reduced prior returns if fully applied; in Q1 2025, the fund navigated market uncertainty from U.S. tariff policies, inflation, and growth concerns amid broader U.S. stock declines; the firm also pursued strategic initiatives such as a 2025 convertible note investment in Claros Technologies and ongoing alliances like its partnership with Nomura Holdings.