Corporate bond investors should target industries with a balanced business risk and financial risk profile. In mature industries cash flows become increasingly predictable and capital expenditures of companies tend to stabilize.

In such an industry the task is to select those companies who succeeded in controlling their cost structures and operate at efficient levels.

Those sectors will show a stable credit trend. Structural changes might push a whole industry into a declining stage. Companies out of those industries will experience structural losses, hence their credit metrics will deteriorate. Management will have no options available to stop this trend. In a next step the competitive environment of an industry has to be analyzed.

The 5-Forces diagram by Michael E. Porter summarizes best the interaction of an industry with its economic environment. An understanding of those relationships is essential for the projection of credit trends in a sector. The competitive environment determines profit margins and the pricing power of companies.