The market impact of the Fed’s taper will be moderated by a significant decline in Treasury and Agency MBS issuance. An imminent taper is very likely now that a press trial balloon has been floated right before blackout and even the ECB is tapering. At the same time, Treasury is expected to lower coupon issuance and Agency MBS production is expected to continue to slow. In light of this, tapering can be thought of as maintaining the level of QE …