Perceived credit quality and risk exposure
For purposes of risk management bonds are often grouped according to agency ratings based on the assumption that bonds with similar ratings tend to show a high degree of comovement. Breger et al. (2003) examine whether the correlation between individual bonds increases if they are grouped by implied ratings, that is by spread classes rather than by agency ratings. The rationale for this would be that market valuations are a better indicator for the drivers of credit spread changes, namely perceived credit quality and risk exposure, than are agency ratings. In their empirical study they find that bonds of the same spread class are more similar than bonds with the same rating from a risk/return perspective. Breger et al. (2003) conclude that the classification of bonds based on market data provides a more reliable basis for modeling return relationships than does a classification by agency ratings. However, one has to note that the motivation behind this study differs significantly from the rating agencies’ approach. The objective is not to predict default risk, but rather to improve the classification of corporate borrowers and provide a basis for reliable spread risk forecasts.
When payday translation risk arises
When financial accounts are converted from one currency to another, translation risk arises. Typically, the financial accounts of foreign subsidiaries have to be translated back in the reporting currency to be included in the consolidated financial accounts. Since most companies do not hedge translation risk, significant changes in exchange rates during the reporting period can cause volatility in revenues and operating income. Usually companies present constant exchange rate revenues as an addition to reported revenues, to allow investors and creditors to analyze the effect of currency fluctuations.
However, a secular depreciation of the US dollar positively affects those European companies with part of their liabilities denominated in US dollars. Not only the amount of debt shown on the balance sheet is reduced, but also the associated interest burden is lessened. In terms of credit ratios, the issuance of debt in a currency, in which part of the revenues are generated, can provide an effective natural hedge against exchange rate volatility. For example, if profits of a European company operating in the United States were reduced by a weakening US dollar, it may be offset by a contemporaneous reduction of the level of US dollar denominated debt. In this case, credit ratios as well as interest coverage ratios could remain constant or even improve. It should be noted that revenues and earnings typically accrue gradually, hence they are translated at average exchange rates, while balance sheet figures are usually determined at the end of reporting period spot rates.