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Security design and credit rating risk in the CLO market

Dennis Vink, Mike Nawas and Vivian van Breemen

DNB Working Papers from Netherlands Central Bank, Research Department

Abstract: In this paper, we empirically explore the effect of the complexity of a security's design on hypotheses relating to credit rating shopping and rating catering in the collateralized loan obligation (CLO) market in the period before and after the global financial crisis in 2007. We find that complexity of a CLO's design is an important factor in explaining the likelihood that market participants display behaviors consistent with either rating shopping or rating catering. In the period prior to 2007, we observe for more complex CLOs a higher incidence of dual-rated tranches, which are more likely to have been catered by credit rating agencies to match each other. Conversely, in the period after 2007, for CLOs, it is more likely that issuers shopped for ratings, in particular opting for a single credit rating by Moody's, not by S&P. Furthermore, contrary to what market participants might expect, investors do not value dual ratings more than single ratings in the determination of the offering yield at issuance. Looking at the explanatory power of credit ratings for a dual rated CLO, the degree to which investors increase their reliance on credit ratings depends to a large extent on the disclosure of an S&P rating, not Moody's. This suggests that investors recognize credit rating risk by agency in pricing CLOs. In sum, the policy implication is that, to effectively regulate CLOs, the regulatory environment ought to differentiate between complex and non-complex CLOs.

Keywords: collateralized loan obligations; credit ratings; security design complexity; rating shopping; rating catering (search for similar items in EconPapers)
JEL-codes: G14 G24 G28 G32 (search for similar items in EconPapers)
Date: 2019-07
New Economics Papers: this item is included in nep-ban
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