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Erscheinungsjahr: 
2018
Schriftenreihe/Nr.: 
Tinbergen Institute Discussion Paper No. TI 2018-100/IV
Verlag: 
Tinbergen Institute, Amsterdam and Rotterdam
Zusammenfassung: 
This paper revisits the credit spread puzzle in bank CDS spreads from the perspective of information contagion. The puzzle, first detected in corporate bonds, consists of two stylized facts: Structural determinants of credit risk not only have low explanatory power but also fail to capture common factors in the residuals (Collin-Dufresne et al., 2001). For the case of banks, we hypothesize that the puzzle exists because of omitted network effects. We therefore extend the structural models to account for information spillovers based on bank business model similarities. To capture this channel, we propose and construct a new intuitive measure for portfolio overlap using the complete asset holdings of the largest banks in the Eurozone. Incorporating the network information into the structural model for bank credit spreads increases explanatory power and removes a systemic common factor as well as a North-South common factor from the residuals. Furthermore, neglecting the network likely overstates the importance of structural determinants.
Schlagwörter: 
Information contagion
credit spread puzzle
bank business model similarities
portfolio overlap measure
dynamic network effects model
JEL: 
G01
G21
C32
C33
C38
Dokumentart: 
Working Paper
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