Delinquency rates among different commercial and multifamily mortgage investor groups were mixed in the first quarter, according to the Mortgage Bankers Association’s (MBA) Commercial/Multifamily Delinquency Report.

The delinquency rate for loans held in commercial mortgage-backed securities (CMBS) reached the highest level since the series began in 1997, according to a statement. Delinquency rates for other groups remain below levels seen in the last major real estate downturn during the early 1990s.

The 90+ day delinquency rate on loans held by FDIC-insured banks and thrifts remained the same in the first quarter at 4.18 percent compared to the fourth quarter 2010. The 30+ day delinquency rate on loans held in CMBS increased 0.23 percentage points to 9.18 percent. The 60+ day delinquency rate on loans held in life company portfolios decreased 0.05 percentage points to 0.14 percent. The 60+ day delinquency rate on multifamily loans held or insured by Fannie Mae decreased 0.07 percentage points to 0.64 percent. The 60+ day delinquency rate on multifamily loans held or insured by Freddie Mac increased 0.1 percentage points to 0.36 percent.