A note on the association between systematic risk and common stock and bond rating classifications

Relative risk classifications for both common stock and bonds are provided by several financial services, based upon their analysis of the financial and operating data of the issuer. Systematic risk, on the other hand, is a quantitative measure of relative risk based upon market-generated data. Using several multivariable statistical techniques and a sample of 443 listed companies, this note provides empirical evidence of the association between 1) systematic risk and common stock rankings, 2) systematic risk and bond ratings, 3) two popular common stock ranking classification systems, and 4) common stock rankings and bond ratings.