Adjustable-rate mortgages apparently remained the loan of choice for subprime borrowers in 2005 – a year that saw an increased number of ARMs included in MBS pools. According to data compiled by affiliated newsletter Inside MBS & ABS, $372.5 billion in new subprime ARMs were securitized last year, a total equal to 73.4 percent of the year’s $507.65 billion in total issuance. Overall, the ARM share of the market grew by about 6 percent… [One data table included]