Rising interest rates may help boost the fortunes of real estate investment trusts that focus on investing in residential MBS by increasing the value of their portfolios. Mortgage REITs had a rough year in 2013, as their stock prices declined an average 10 percent while the Standard & Poor’s Index rose 29 percent. It was thought that “tapering” by the Federal Reserve would cause rates to rise – which they did for a short while – but now the reverse has happened, thanks in large part to recent weak employment numbers. Late this week, the yield on the 10-year Treasury was...