According to the 30th annual ARM Survey released by Freddie Mac, ARM initial-period rates have jumped from the previous year but are still considered historically low. Adjustable-rate mortgages have grown more popular as rates on 30-year fixed-rate mortgages have become higher. The Vice President of Freddie Mac, Frank Nothaft said, “homebuyers have preferred fixed-rate mortgages the past few years because of the low interest rates and the certainty of the monthly principal and interest payment.” More here