Fannie Mae saw its highest quarterly volume since mid-2004.
Third quarter business purchases of $181.1 billion jumped 30% from the previous quarter and improved about 6% from the same period a year ago, Fannie said Friday in its September monthly summary report.
The numbers are the best since the second quarter 2004.
In September alone, business volume was reportedly $70.6 billion, soaring above August's $57.9 billion.
As outstanding mortgage-backed securities ticked up from the previous month to $1.6 trillion and the gross mortgage portfolio ended with a balance of $0.7 trillion, the secondary lender said its book of business edged just above $2.3 trillion in September.
Single-family delinquency, which Fannie reports on a one-month lag, remained at 0.59% in August.
The Washington, D.C.-based company's effective duration gap, a measure of the balance of Fannie's cash flows on assets and liabilities, increased to +1 months in September from zero months in August, the report said.