The tendency of a pool of M.B.S.s to reflect an especially high rate of prepayments the first time it crosses the threshold for refinancing, especially if two or more years have passed since the date of issue without the weighted average coupon of the pool having crossed the refinancing threshold.
OVERSHOOTING
Meaning of OVERSHOOTING in English
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012