Non-Investment Grade Bonds (Unsecured Debentures)
A non-investment grade bond, also called a speculative bond, a high yield bond, an unsecured debenture, or a junk bond, is a bond that is considered a low quality investment because the issuer may default. Rating agencies have systems for rating bonds as investment grade or non-investment grade. Non-investment grade bonds offer higher yields than investment grade bonds to compensate for the greater risk.
High Yield Debt (Junk Bonds)
High Yield Bond Ratings
The highest quality corporate bonds will have a rating of AAA. The lowest quality bonds are rated D, or already in default. Anything rated BBB or above is investment grade. Anything rated BB or below is non-investment grade. Different rating agencies may use different variations of the above rating system. For example, an agency may include plus (AA+) and minus (BBB-) signs to add levels to the rating system.
Junk Bond Yields
Junk Bond Index
A junk bond index tracks the performance of non-investment grade bonds.