The fund's investments typically include, but are not limited to, debt instruments issued by the U.S. government and its agencies, corporate bonds, bank loans, and various types of mortgage-backed and asset-backed securities. It may invest up to 35% of its net assets in corporate bonds and other debt instruments that are rated below investment-grade, commonly known as junk bonds or high yield bonds, by each of the rating agencies that have assigned a rating to the security or, if unrated, deemed by T. Rowe Price to be below investment-grade.