Freddie Mac purchased more secondary market loans in February.
Business purchases of $36.6 billion last month grew from January's $35.9 billion and also from the $33.8 a year earlier, according to Freddie's latest monthly volume summary.
The reported $1.5 trillion total mortgage portfolio consisted of $0.9 trillion in issued participation certificates and the McLean, Va.-based company's retained portfolio of $0.7 trillion, which grew for the first time in six months.
The delinquency rate -- which Freddie reports on a one-month lag -- for single-family loans past due 90 days or more was 0.72% in January, edging down one basis point from the previous month.
The government sponsored enterprise said the balance of its cash flows from assets and liabilities, which it refers to as the average duration gap, remained at zero months in February.