Understanding Portfolio Credit Risk: Systematic, Unsystematic, Concentration, and Correlation Risks
Portfolio credit risk is the aggregate risk arising from a collection of credit exposures, driven by macroeconomic conditions, borrower-specific factors, exposure concentrations, and inter-linkages across obligors and sectors. This article explains the key risk drivers—systematic risk, unsystematic/idiosyncratic/diversifiable risk, concentration risk, and correlation risks—and frames how banks can measure and manage them in practice. Systematic risk…
