What is Mutual Fund?

A mutual fund is a professionally managed investment company that pools capital from numerous retail and institutional investors to purchase a diversified portfolio of securities, such as equities, bonds, or short-term debt instruments. Governed by the Investment Company Act of 1940 and registered with the Securities and Exchange Commission (SEC), mutual funds are managed by professional investment advisers who select assets to match specific investment objectives (e.g., growth, income, or sector-specific targets). Unlike stocks or ETFs, mutual fund shares do not trade on public secondary exchanges; instead, investors purchase and redeem shares directly from the fund company or through an intermediary broker.

All mutual fund transactions are processed once daily at the market close (typically 4:00 p.m. EST) at the fund's Net Asset Value (NAV), which represents the total value of the fund's assets minus its liabilities, divided by the number of outstanding shares. Mutual funds carry specific fee structures disclosed in their prospectuses, including the annual expense ratio (management fees), sales loads (commission charges assessed at purchase or redemption), and 12b-1 fees (marketing and distribution expenses). A notable disadvantage of mutual funds compared to ETFs is their tax inefficiency: when investors redeem shares, the fund must often sell underlying securities to raise cash, generating capital gains. Federal law requires the fund to distribute these realized capital gains to all shareholders annually, creating tax liabilities for investors even if they did not sell any shares.