New Federal Reserve Chair Janet Yellen said this week that the U.S. central bank’s bond purchase program will likely end this fall as the Fed Open Market Committee announced, as expected, a further pullback in its agency MBS purchases. Beginning in April, the FOMC said it will add to its agency MBS holdings at a pace of $25 billion per month rather than $30 billion per month. If the slowdown continues at its current pace, the Fed will stop growing its MBS holdings late this summer. The FOMC also updated...