The aggregate value of commercial real estate (CRE) loans that collateralize commercial mortgage-backed securities (CMBS) rose to 76.6% of the original balance in May, from 76.4% in April, according to loan sale advisor DebtX. Values are up from 75.9% in March and 76.5% in February. CRE loan values are down from 77.6% in May 2009, according to DebtX. "US CMBS collateral prices increased again in May," said DebtX CEO Kingsley Greenland. "A flattening Treasury yield curve due to a flight to US government securities more than offset a deterioration of commercial real estate fundamentals and a widening of credit spreads." The information is based on the loans priced by DebtX. In March, DebtX priced 58,901 CRE loans with an aggregate principal balance of $691bn. Write to Diana Golobay.