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Pooling, tranching, and credit expansion

Bougheas, Spiros


Spiros Bougheas


Traditionally banks have used securitization for expanding credit and thus their profitability. It has been well documented that, at least before the 2008 crisis, many banks were keeping a high proportion of the securities that they created on their own balance-sheets. Those securities retained included both the high-risk ‘equity’ tranche and the low-risk AAA-rated tranche. This paper builds a simple model of securitization that accounts for the above retention strategies. Banks in the model retained the equity tranche as skin in the game in order to mitigate moral hazard concerns while they post the low-risk tranche as collateral in order to take advantage of the yield curve. When variations in loan quality are introduced the predicted retention strategies match well those found in empirical studies.

Journal Article Type Article
Publication Date Apr 1, 2014
Journal Oxford Economic Papers
Print ISSN 0030-7653
Electronic ISSN 0030-7653
Publisher Oxford University Press (OUP)
Peer Reviewed Peer Reviewed
Volume 66
Issue 2
Institution Citation Bougheas, S. (2014). Pooling, tranching, and credit expansion. Oxford Economic Papers, 66(2), doi:10.1093/oep/gpt029
Publisher URL
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf


PoolingTranchingCreditExpansion OEP Rev2.pdf (481 Kb)

AM - Accepted Manuscript

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