Mortgage Bond Market Plagued by Valuation Doubts

Bloomberg, Aug. 12, 2020–Christopher Maloney
Mortgage-backed securities analysts at Morgan Stanley and Bank of America Corp. have recently warned that valuation models are less reliable with the precipitous drop in mortgage rates — the 30-year average is now at 2.88% — and the prepayment speed surge.
https://www.bloomberg.com/news/articles/2020-08-12/mortgage-bond-market-plagued-by-valuation-doubts-as-speeds-surge