Fannie Mae's issuance of MBS fell 39% in July from the previous month, according to the company's new monthly activity report.

The mortgage giant issued $79.7 billion in MBS during July, compared to $130 billion in June. At the same time, its commitments to purchase loans jumped 42% in July to $103.6 billion, a sign that residential production could be picking up.

Freddie Mac recently reported a 30% decline in July MBS issuance along with a 33% drop in purchases of refinanced mortgages. Freddie said it purchased $34.1 billion in refinancings in July, but Fannie has stopped reporting refinancing volumes. However, their regulator reported that Fannie purchased 264,317 refinanced loans in July and Freddie purchased 158,182 refinancings.

Based on Freddie's average loan size, Fannie purchased approximately $57 billion in refinancings. Fannie also said 3.9% of its single-family mortgages in June were 90 days or more past due, up from 1.36% a year ago.

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