"The potential for portfolio diversification is driven broadly by two characteristics: the degree to which systematic risk factors are correlated with each other and the degree of dependence individual firms have to the different types of risk factors. Using a global vector autoregressive macro...

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Bibliographic Details

Main Authors:	Pesaran, M. Hashem 1946- (Author), Schuermann, Til (Author), Treutler, Björn-Jakob (Author)
Format:	Book
Language:	English
Published:	Cambridge, Mass. National Bureau of Economic Research 2005
Series:	National Bureau of Economic Research <Cambridge, Mass.>: NBER working paper series 11493
Subjects:	Ökonometrisches Modell Diversification in industry Portfolio management > Econometric models
Online Access:	Volltext
Summary:	"The potential for portfolio diversification is driven broadly by two characteristics: the degree to which systematic risk factors are correlated with each other and the degree of dependence individual firms have to the different types of risk factors. Using a global vector autoregressive macroeconomic model accounting for about 80% of world output, we propose a model for exploring credit risk diversification across industry sectors and across different countries or regions. We find that full firm-level parameter heterogeneity along with credit rating information matters a great deal for capturing differences in simulated credit loss distributions. These differences become more pronounced in the presence of systematic risk factor shocks: increased parameter heterogeneity reduces shock sensitivity. Allowing for regional parameter heterogeneity seems to better approximate the loss distributions generated by the fully heterogenous model than allowing just for industry heterogeneity. The regional model also exhibits less shock sensitivity"--National Bureau of Economic Research web site.
Physical Description:	55 S. graph. Darst.