Читать книгу The Sterling Bonds and Fixed Income Handbook - Mark Glowrey - Страница 38

The following credit ratings are known as investment-grade debt. As a rule of thumb, investors managing portfolios where the risk must be minimised, and security of income and capital is paramount, will restrict themselves to bonds rated AAA and AA, with perhaps a few single A investments. Consider also a bond’s credit history. Has the rating improved or declined over time? Bonds subject to a potential re-rating will be on “credit watch”.