英文名称：Bond Fund 中文名称：债券基金
以债券为投资目标的基金，其主要特点是风险较低、收益稳定。
e.g. Fidelity Investments is being sued over losses in the Fidelity ultra-short bond fund, which invested in risky mortgage-backed securities.

A fund invested primarily in bonds and other debt instruments. The exact type of debt the fund invests in will depend on its focus, but investments may include government, corporate, municipal and convertible bonds, along with other debt securities like mortgage-backed securities.

For investors interested in bonds, a Morningstar bond style box can be used to sort out the investing options available for bond funds. Investors should note that U.S. government bonds are considered to be of the highest credit quality and are not subject to ratings.