There was a unique study done recently paper titled “MARKET EFFICIENCY AND DEFAULT RISK: EVIDENCE OF AN imagesANOMALY FROM THE CDS AND LOAN CDS MARKETS” by Lawrence Kryzanowski, Stylianos Perrakis and Rui Zhong.

The findings where significantly positive pricing-parity deviations from a simulated portfolio that simultaneously participates in opposite legs of the undervalued and overvalued contracts in the CDS and LCDS markets for exactly the same underlying firm, maturity, currency and restructure clauses. These deviations cannot be accounted for by trading costs, illiquidity or imperfect data about recovery rates in the event of default, suggesting segmentation between CDS and LCDS markets. Continue reading