This week, the Federal Reserve’s Open Market Committee provided a bit more information on the process it plans to follow in shrinking the size of its massive balance sheet, once it decides the time is right to finally begin. “Provided that the economy evolves broadly as the committee anticipates, we currently expect to begin implementing a balance sheet normalization program this year,” Fed Chair Janet Yellen said in her post-meeting press conference. The hope is to initiate an incremental and largely predictable decline in the U.S. central bank’s securities holdings. The FOMC intends...