The new central counterparty for MBS trades is having a difficult time delivering results and is, in fact, experiencing a drawback because of stringent margin rules as well as other internal issues, according to financial advisory firm NewOak Capital Advisors. The regulated multilateral central counterparty trading platform for executing to-be-announced agency MBS is not at full power because most TBA participants are not doing what they are supposed to, observed Ron DVari, chief executive officer and co-founder of NewOak. The key drawbacks are...