Structured Assets Securities Corp., Lehman Brothers’ do-it-all securitization shelf, ranked as the most productive program in the non-agency MBS market through the first nine months of 2005. According to a new Inside MBS & ABS ranking, SASCO pumped out a total of $69.96 billion of public non-agency MBS through the end of September. Although we include private placements in our overall non-agency MBS data, these deals are not attributed to any securitization shelf. … [One data table included]