Internal credit risk rating systems are becoming an increasingly important element of large commercial banksÕ measurement and management of the credit risk of both individual exposures and portfolios. This article describes the internal rating systems presently in use at the 50 largest US banking organizations. We use the diversity of current practice to illuminate the relationships between uses of ratings, dierent options for rating system design, and the eectiveness of internal rating systems. Growing stresses on rating systems make an understanding of such relationships important for both banks and regulators.
Default, loss severity, and average loss rates for a large sample of privately placed bonds are presented and compared with loss experience for publicly issued bonds. The chance of very large portfolio losses is estimated and some determinants of such losses are analyzed. Results show ex ante riskier classes of private debt perform better on average than public debt. Both diversification and the riskiness of individual portfolio assets inf luence the bad tail of the portfolio loss distribution. Private placements are similar to corporate loans in that both are monitored private debt. The results are thus relevant to management and securitization of private debt portfolios generally.
This paper establishes empirically the existence of specialization in private‐market corporate lending, adding a new dimension to the public versus private debt distinctions now common in the literature. Comparing corporate loans made by banks and by finance companies, we find that the two types of intermediaries are equally likely to finance information‐problematic firms. However, finance companies tend to serve observably riskier borrowers, particularly more leveraged borrowers. Evidence supports both regulatory and reputation‐based explanations for this specialization. In passing, we shed light on various theories of debt contracting and intermediation and present facts about finance companies.
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