Fueled by a strong refinance market, securitization of so-called Alternative A mortgages reached new heights last year, a new Inside MBS & ABS market analysis reveals. Overall, $35.53 billion in securities backed by Alt-A mortgages and prime-grade loans underwritten with alternative documentation were issued in 2001. That marked a 162 percent increase – on a year-to-year basis – from 2000. But it’s