A mutual fund is a company that pools money from many investors and invests the money in stocks, bonds, short-term money-market instruments, other securities or assets, or some combination of these investments. The combined holdings the mutual fund owns are known as its portfolio. Each share represents an investor's proportionate ownership of the fund's holdings and the income those holdings generate.

Some of the traditional, distinguishing characteristics of mutual funds include the following:

	Investors purchase mutual fund shares from the fund itself (or through a broker for the fund) instead of from other investors on a secondary market, such as the New York Stock Exchange or Nasdaq Stock Market.
	The price that investors pay for mutual fund shares is the fund's per share net asset value (NAV) plus any shareholder fees that the fund imposes at the time of purchase (such as sales loads).
	Mutual fund shares are "redeemable," meaning investors can sell their shares back to the fund (or to a broker acting for the fund).
	Mutual funds generally create and sell new shares to accommodate new investors. In other words, they sell their shares on a continuous basis, although some funds stop selling when, for example, they become too large.
	The investment portfolios of mutual funds typically are managed by separate entities known as "investment advisers" that are registered with the SEC.