Adjustable Rate Mortgage Indexes

October 28, 2005, November 18, 2008, Reviewed February 12, 2011

COMMONLY USED ARM INDEXES

A. Cost of Funds, Eleventh District (COFI)
B. 1-Year Treasury Constant Maturity Rate
C. 2-Year Treasury Constant Maturity Rate
D. 3-Year Treasury Constant Maturity Rate
E. MTA, a 12-month moving average of B
F. 1-Month Libor
G. 12-Month Average of F
H. 6-Month Libor
I. 6-Month Certificate of Deposit Rate
J. Certificate of Deposit Index (CODI), a 12-month moving average of the 3-month CD rate
K. Bank Prime Loan Rate

Sources:

The best site today, which has all the current indexes and extensive historical information, is http://www.mortgage-x.com/general/mortgage_indexes.asp. Some other sources are listed below.

http://www.bankrate.com/brm/ratehm.asp. Shows most recent values of A, B, C, D, E, F, H and K.

http://www.federalreserve.gov/releases/h15/data.htm. Shows current and historical values of B, C, D, F, H, I and K.

http://www.hsh.com/indices/11cof00s.html. Shows current and historical values of A, B, C, D, F, H and K.

http://www.nfsn.com/library/mta.htm. Shows current and historical values of E.

http://www.aami.net/mon/codi_information.htm. Shows current and historical values of J.

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