- Sector
- Financial Services
- Industry
- Asset Management
- Address
- 875 East Wisconsin Ave Ste 800 Milwaukee WI United States of America 53202
- IPO Date
- Jun 27, 1997
- Business
- Artisan Mid Cap Fund Investor Shares (ARTMX) is an open-end mutual fund managed by Artisan Partners Asset Management Inc., focusing on mid-cap growth equities. The fund normally invests at least 80% of its net assets plus any borrowings for investment purposes in common stocks of medium-sized companies, defined as those with market capitalizations greater than the smallest company in the Russell Midcap Index and less than three times the weighted average market capitalization of companies in the index; it offers investor class shares with a mid-cap growth strategy targeting long-term capital appreciation through high-conviction stock selection in sectors such as healthcare, technology, consumer cyclical, communication services, and energy. Top holdings include argenx SE ADR, Ascendis Pharma AS ADR, Spotify Technology SA, Insmed Inc., and West Pharmaceutical Services Inc., among others. ARTMX operates within the Artisan Partners Funds family and trades on NASDAQ.
Artisan Partners Asset Management Inc., founded in 1994 and headquartered in Milwaukee, Wisconsin, United States, provides a broad range of investment strategies across multiple asset classes, including growth equity, value equity, global equity, credit, and emerging markets, through autonomous investment teams serving institutional investors, high-net-worth individuals, pension funds, endowments, and retail investors globally; the firm maintains operations in the United States and international markets. The Artisan Mid Cap Fund, with an inception date of June 27, 1997, is one of its flagship offerings in the mid-cap growth segment.
In recent developments, Artisan Partners announced the acquisition of Grandview Property Partners in November 2025, expanding into private real estate and alternative investments with an expected closure in the first quarter of 2026; this move diversifies the firm's offerings beyond traditional equities into industrial, residential, and powered-land themes. The firm reported preliminary assets under management of $161.2 billion as of December 31, 2024, reflecting organic growth and strategic initiatives. In its third-quarter 2025 investor letter, the Artisan Mid Cap Fund highlighted portfolio adjustments, including exiting Atlassian Corporation (TEAM), acquiring ServiceTitan (TTAN), and reducing positions in SAIA Inc., amid strong market gains where ARTMX Investor Class returned 8.80% for the quarter.