Fannie Speeds Mostly Flat

Meanwhile, prepayment rates for Fannie Mae non-discount MBS showed little change in the July reporting period, including those for 7%-8% coupons, according to the Bear Stearns Prepayment Commentary.[Click here to see the table.] The Bear Stearns analysts termed the Fannie Mae speeds "extremely muted" in comparison to Ginnie Mae's, increasing only 1.4% for 30-year 7.5s and a mere 0.4% for 30-year 8.0s. "Why the tepid response in these cuspy coupons?" the analysts asked. "Most likely, this is largely noise, a result of minor reporting differences between the agencies." They added, however, that the Fannie Mae 7.5 is "somewhat less burned out" than the Ginnie Mae 7.5. Prepayment rates for discount Fannie Mae MBS showed "solid gains," rising about 20% for 30-year 6.5s. The analysts warned that the calm in the latest Fannie Mae report "masks the potential for higher speeds, particularly in the cusp coupons, and we expect more pressure on conventional 7.5% speeds next month."