Study of Consistency of Bond and CDS Quotes

In this paper, we study the consistency of bonds and CDS quotes data within a widely accepted credit risk pricing framework, allowing for non-trivial term structures of risk-free interest rates and default intensities. We propose an approach to test this consistency and a procedure to deal with inconsistencies. Our approach is model-independent and does not rely on any term structure fitting method. It also allows us to assess the precision of constructing risk-free yield term structure can be estimated for a given bond and CDS quotes set. We apply the proposed approach to euro zone sovereign bond and CDS data, and demonstrate that, in general, bond/CDS quotes are typically inconsistent across issuers and require filtration. However, our findings suggest grouping the euro zone sovereign issuers according to the group-level internal consistency