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Adjustable Rate Mortgage Indexes

Adjustable Rate Mortgage Indexes

Last Updated October 28, 2005

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:

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.

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

 

Copyright Jack Guttentag 2005 

 

 

Jack Guttentag is Professor of Finance Emeritus at the Wharton School of the University of Pennsylvania. Visit the Mortgage Professor's web site for more answers to commonly asked questions.

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