Thirty-year conventional prepayment speeds have declined by 11% in the most recent month, according to Credit Suisse.
Surprises during the month included
Fifteen-year speeds also slowed, but to a lesser degree than was seen in the 30-year sector, and aggregate speeds of 30-year product in the Ginnie Mae sector were 3% slower for Ginnie Mae Is and 7% slower for Ginnie Mae IIs.










