Mutual fund

A **mutual fund** in the United States is an SEC-registered open-end investment company that pools money from many investors to buy a portfolio of securities or other assets. Each share represents a proportional interest in the fund’s portfolio and its results, less expenses. The fund’s investment adviser manages the portfolio, while shareholders buy and redeem shares at prices based on the fund’s net asset value (NAV). ^[1]

Structure and ownership

A mutual fund combines assets contributed by its shareholders and invests them according to its stated investment objective and policies. A fund may hold stocks, bonds, short-term money-market instruments, or a combination of investments. Investors own shares in the fund rather than directly owning a proportional number of each security in its portfolio. The portfolio is managed by an investment adviser registered with the SEC. ^[1]

Mutual funds are a type of investment company. They are distinct from closed-end funds, which generally issue a fixed number of shares that trade between investors on an exchange, and from exchange-traded funds, whose shares trade on exchanges during the trading day. Mutual fund shares are redeemable: shareholders can sell them back to the fund, rather than needing to find another investor to buy them. ^[1][2]

A fund’s legal and operating arrangements involve more than its adviser. The SEC identifies investment companies and investment advisers among the entities subject to federal securities regulation, and its regulatory materials describe the laws and requirements that apply to investment companies. The precise arrangements and service providers differ by fund. ^[3]

Net asset value and transactions

Net asset value per share is the value of a fund’s assets minus its liabilities, divided by the number of shares outstanding. The NAV is used to determine the transaction price for a mutual fund share, subject to applicable fees. Unlike an exchange-traded security, a conventional mutual fund share does not generally have a continuously changing public trading price during the day. An order to buy or redeem shares is processed at the next calculated NAV after the order is received, with any applicable charges taken into account. ^[1][2]

The SEC’s Investor.gov describes redemption as a sale of shares back to the fund at the next calculated NAV on a business day, minus any redemption fee. A redemption fee may apply to some funds. The SEC glossary says a fund generally must pay redemption proceeds within seven days after receiving a redemption request, with exceptions including certain market closures, emergencies, or an SEC order delaying redemptions. ^[1][4]

Fund categories and strategies

Mutual funds are commonly classified by the assets they primarily hold or by their investment approach. Stock funds invest primarily in equities; bond funds invest primarily in debt securities; money market funds invest in short-term money-market instruments; and balanced or allocation funds combine asset classes. Funds may also focus on a sector, geographic region, market capitalization, or investment theme. These labels describe broad approaches rather than guaranteeing a particular result or level of risk. ^[2]

A fund may be actively managed, meaning its adviser makes portfolio decisions under the fund’s stated strategy, or may follow an index-based approach designed to track a specified index. The SEC’s guide to mutual funds and ETFs discusses different fund types and investment strategies, as well as the disclosures investors can review to understand a fund’s objectives and risks. Fund names and categories do not replace examination of the prospectus and portfolio information. ^[2]

Returns and risks

Investors may receive returns through income distributions, capital-gain distributions, and increases in NAV. A fund may receive dividends from stocks or interest from bonds and distribute income to shareholders, after expenses. When it sells a security at a gain, the fund may distribute capital gains, net of losses. If the market value of the portfolio rises after accounting for expenses and liabilities, the NAV may rise as well. Funds may offer shareholders the option to receive distributions in cash or reinvest them in additional shares. ^[1]

Mutual fund shares are not deposits and are not insured or guaranteed by the Federal Deposit Insurance Corporation or another government agency. Investors can lose some or all of the money they invest because the fund’s holdings can decline in value. Income payments may also change as market conditions change. Diversification can spread exposure across multiple securities, but it does not eliminate market risk or guarantee a profit. ^[1][2]

The risks vary with a fund’s holdings and strategy. For example, stock funds are exposed to changes in equity prices; bond funds can be affected by interest-rate changes and the creditworthiness of issuers; and funds concentrated in particular industries or regions may have less diversified exposure. A fund’s prospectus and shareholder reports describe its investment objective, principal risks, holdings, and operating results. ^[2]

Fees and expenses

Mutual fund costs can include shareholder fees charged in connection with transactions and operating expenses paid from fund assets. Shareholder fees may include sales loads, redemption fees, exchange fees, or account fees. Operating expenses can include investment-management costs, distribution and service charges, and administrative expenses such as custody, transfer agency, legal, and accounting costs. ^[5][6]

A prospectus includes a standardized fee table showing annual operating expenses and shareholder fees where applicable. The expense ratio expresses total annual fund operating expenses as a percentage of the fund’s average net assets. Distribution or service fees authorized under SEC Rule 12b-1 may be included in a fund’s operating expenses. The particular fees charged vary among funds and share classes, so a fund’s prospectus and shareholder reports provide fund-specific information. ^[5]

Fees and expenses reduce returns. Because operating costs are deducted from fund assets, they affect the value available to shareholders even if the shareholder does not see each cost as a separate transaction. A fund’s sales charges or other shareholder fees may add costs when shares are purchased, redeemed, or exchanged. The SEC notes that the fee table does not necessarily include every charge an investor might pay, such as brokerage commissions or fees charged by intermediaries. ^[5][6]

Tax treatment

In a taxable account, distributions can have tax consequences even if a shareholder does not sell fund shares. When a mutual fund passes through capital gains from sales of portfolio assets, the shareholder may receive a capital-gain distribution. The IRS explains that capital-gain distributions are generally reported on Form 1099-DIV and treated as long-term capital gains regardless of how long the shareholder has owned the fund shares. ^[7]

Tax treatment depends on the type of distribution, the account in which the shares are held, and the applicable tax rules. Reinvesting a distribution to buy additional shares does not, by itself, mean that the distribution was not received for tax purposes. The IRS’s guidance describes the reporting of capital-gain distributions; other tax situations may require different treatment. ^[7]

Disclosure and oversight

Mutual funds distribute disclosures that describe the fund’s objectives, risks, fees, and operations. The prospectus is a key source for fund-specific information, while shareholder reports provide updates on holdings, financial performance, and expenses. SEC materials also explain the federal registration and regulatory framework for investment companies and investment advisers. ^[2][3][5]

The SEC regulates registered investment companies and registered investment advisers under federal securities laws. Registration and disclosure requirements do not mean that the SEC endorses a fund or guarantees its performance. The SEC’s investor guidance specifically warns that mutual funds are not government-insured and that past performance does not predict future results. ^[1][3]

Use in savings and retirement accounts

Mutual funds are used in individual brokerage accounts and in tax-advantaged arrangements, including some employer-sponsored retirement plans such as a 401(k) plan. In a retirement plan, the plan may offer a menu of investment options that includes mutual funds. The account’s tax treatment depends on the plan and applicable law; the fund itself remains subject to its own investment strategy, fees, risks, and disclosures. ^[2]

A mutual fund is a pooled investment vehicle, not a particular account type. Holding fund shares through a retirement account does not change the underlying securities in the fund, although the account may affect when investment income or gains are taxed. Shares can also be held outside retirement accounts, in which case distributions and sales may have tax consequences under the investor’s circumstances. ^[2][7]