The Monthly Treasury Average achieved another all-time low last month, and the streak of record-setting months appears poised to continue for at least another month.
MTA, which is used to determine rate and payment changes on some adjustable-rate mortgages, came in at 0.13083 percent in December.
The latest index level was the lowest level on record based on data reported by the Federal Reserve Board as far back as 1953.
A month earlier, MTA was a record-low 0.13333 percent.
In December 2012, the index was 0.17500 percent.
MTA is determined based on a daily average for the one-year Treasury yield for each of the past 12 months.
In December, the daily average for the one-year Treasury was 0.13 percent.
MTA will rise in January if the monthly average for the one-year Treasury comes in higher than 0.15 percent, while it will decline further if the average is less than 0.15 percent.
The yield on the one-year Treasury note, which is far more widely used as an ARM index, closed at 0.13 percent Friday.
ARM share was 11.1 percent in the U.S. Mortgage Market Index report from LoanSifter and Mortgage Daily for the week ended Jan. 3.
