The Federal Reserve’s Open Market Committee this week met Wall Street’s expectations that it will continue to plow principal payments from its holdings of agency MBS back into agency MBS until sometime after the central bank decides to raise its federal funds target range. “The timing will depend on how economic and financial conditions and the economic outlook evolve,” said the FOMC after its two-day meeting concluded Wednesday afternoon. In the meantime, the Fed’s tapering of its quantitative easing program will continue...