Bridge over ocean
1 March 1979 Financial Analysts Journal Volume 35, Issue 2

Do Common Stock Quality Ratings Predict Risk?

  1. Robert A. Haugen, PhD

Can quality ratings of the type provided by Standard & Poor’s predict the subsequent price behavior of common stocks? The author ranked all New York Stock Exchange stocks rated by Standard & Poor’s on the basis of the latter’s quality ratings and constructed portfolios based on these rankings. He then examined the degree of correspondence between the original quality rankings of the portfolios and their subsequent price risk, employing as his risk measures beta, which measures sensitivity to general market fluctuations, and the variance of monthly rates of return, which incorporates both market and non-market risk.

The author found perfect correspondence between quality ratings and subsequent beta, and nearly perfect correspondence between ratings and variance. Furthermore, the dispersion of returns on the individual stocks within each portfolio displayed nearly perfect correspondence with the portfolio’s average quality ranking.

Read the Complete Article in Financial Analysts Journal Financial Analysts Journal CFA Institute Member Content

We’re using cookies, but you can turn them off in Privacy Settings.  Otherwise, you are agreeing to our use of cookies.  Accepting cookies does not mean that we are collecting personal data. Learn more in our Privacy Policy.