The commercial mortgage-backed securities delinquency rate rose in August, reversing an improvement in the rate in July, according to Trepp.

The rate in August rose to 5.45% from 5.42% in July. That's below the 6.1% rate from August 2014. The rate has fallen 30 basis points this year.

About $1.3 billion of CMBS loans became newly delinquent in August, raising the total to $28.4 billion.

"CMBS delinquencies continue to be range bound and we expect this to continue for the foreseeable future," Manus Clancy, a senior managing director at Trepp, said in a news release.

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