What Is a Mutual Fund?
In plain English
A mutual fund is an investment vehicle that pools capital from multiple investors to purchase a diversified portfolio of securities managed according to a specific investment strategy. Investors buy shares of the fund rather than individual securities, receiving proportional ownership of the entire portfolio. Mutual funds can be actively managed or passively track an index, and they price once per day at net asset value.
How Does a Mutual Fund Work?
When you invest in a mutual fund, your money is combined with that of thousands of other investors. The fund manager uses this pooled capital to purchase a portfolio of securities aligned with the fund's stated objective — growth, income, balanced, or a specific sector. You receive shares proportional to your investment. The fund's price, called net asset value (NAV), is calculated after market close each trading day.
What Are the Different Types of Mutual Funds?
Mutual funds span a wide spectrum. Stock funds invest in equities for growth. Bond funds hold fixed-income securities for income and stability. Money market funds hold short-term, low-risk instruments as cash equivalents. Balanced funds hold both stocks and bonds. Target-date funds automatically adjust their allocation over time. Index funds passively track a market benchmark. Each type carries different risk, return potential, and cost profiles.
What Are the Downsides of Actively Managed Mutual Funds?
Actively managed mutual funds tend to carry higher expense ratios than index funds or ETFs, often 0.5% to 1.5% annually. They may also distribute capital gains taxable events even if you did not sell your shares. Most importantly, the majority of actively managed funds underperform their benchmark index over 10- and 20-year periods, largely because fees and trading costs consume any performance edge.
Frequently asked questions
What is the minimum investment for a mutual fund?
Minimums vary widely. Traditional mutual funds often require $1,000 to $3,000 to open an account, though some have no minimum. Fidelity and Schwab offer zero-minimum index mutual funds. ETFs, which often track identical indices, can be purchased for the price of a single share, making them more accessible for smaller investors.
Are mutual funds safe investments?
Mutual funds are not guaranteed and can lose value, but they are regulated by the SEC and provide diversification that reduces single-stock risk. Broad market index mutual funds have historically grown over long periods. Their safety depends on the types of securities they hold — stock funds are more volatile than bond funds.
Keep exploring
Related terms
Index Fund
An index fund is a type of investment fund that tracks a specific market index, like the S&P 500. It offers broad diversification at very low cost and is a cornerstone of passive investing.
ETF (Exchange-Traded Fund)
An ETF is a basket of securities that trades on a stock exchange just like a single stock. ETFs combine the diversification of mutual funds with the flexibility and low cost of individual stock trading.
Expense Ratio
An expense ratio is the annual fee a fund charges investors, expressed as a percentage of assets. Even small differences in expense ratios compound into significant cost differences over decades.
Asset Allocation
Asset allocation is how you divide your investment portfolio among different asset classes like stocks, bonds, and cash. Your allocation is the single biggest driver of your portfolio's long-term risk and return.
Diversification
Diversification means spreading investments across different assets, sectors, and geographies to reduce risk. It reflects the principle of not putting all your eggs in one basket.