Non-Agency MBS Market Posts Banner 1st Quarter as Issuance, Performance Excel Showing little sign of slowing down, the non-agency mortgage security market posted one of its best periods ever in the first quarter of 2002 as both new issuance and performance set new records. According to numbers compiled by Inside MBS & ABS, a first quarter record of $93.97 billion in non-agency MBS were produced in the first three months of this year. This was