Boosted by a surge in security production by Fannie Mae and Freddie Mac as well as non-conforming MBS issuers, the overall securitization rate for new mortgages climbed to the second high-est quarterly level ever during the third quarter of 2005. According to numbers compiled by Inside MBS & ABS, a very healthy 69.7 percent of new mort-gage originations found their way into securities in the latest quarter. That was up...