by MATT PHILLIPS on Tue Feb 21 22:49
Mortgage rates are the lowest on record. But by a key historical measure, they should be even lower.Over the past year, a wide gap ripped open between the mortgage rates house hunters see and a benchmark interest rate investors demand to buy bonds backed by home loans.In normal times, this obscure metric would only be of interest to bankers, brokers and traders of mortgage-backed securities. But with housing still dragging on the economy, the spread is potentially slowing the recovery—and import...