The share of new mortgage originations that were plowed into the mortgage securities market rose noticeably in the third quarter as the primary market continued to see a major upheaval in terms of both product mix and volume. Some 69.4 percent of the estimated $650 billion in residential mortgages originated during the third quarter of 2004 were securitized, according to an analysis by Inside MBS & ABS. While this was down slightly from the record-high