“…Whereas there have been many empirical studies of structural models, especially recently, based on corporate bond data, the empirical testing of these models using CDS spreads is quite limited. Such a testing is desirable especially given the recent empirical evidence based on the corporate bond market that existing structural models have difficulty either fitting corporate bond spreads (e.g., Jones, Mason, and Rosenfeld (1984), Lyden and Saraniti (2000), Delianedis and Geske (2001), Eom, Helwege, and Huang (2004), Arora, Bohn, and Zhu (2005) and Ericsson and Reneby (2005)) or explaining both spreads and default frequencies simultaneously (the so-called credit spread puzzle documented in Huang and Huang (2003)). If CDS spreads are considered to be a purer measure of credit risk than corporate bond spreads, then the existing structural models (purely default risk based) may perform better in capturing the behavior of CDS spreads than they do for corporate bond spreads.…”