Bond funds invest primarily in securities known as bonds. A bond is a type of security that resembles a loan. When a bond is purchased, money is lent to the company, municipality, or government agency that issued the bond. In exchange for the use of this money, the issuer promises to repay the amount loaned (the principal; also known as the face value of the bond) on a specifi c maturity date. In addition, the issuer typically promises to make periodic interest payments over the life of the loan.

A bond fund share represents ownership in a pool of bonds and other securities comprising the fund’s portfolio. Although there have been past exceptions, bond funds tend to be less volatile than stock funds and often produce regular income. For these reasons, investors often use bond funds to diversify, provide a stream of income, or invest for intermediate-term goals. Like stock funds, bond funds have risks and can make or lose money.