ARM MBS Subtypes

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ARM MBS Subtypes

Adjustable-rate (ARM) Fannie Mae MBS Subtypes are alphanumeric codes that identify ARM product characteristics such as index, initial fixed-rate period, rate and payment adjustment frequency and caps, convertibility, and other features.

The following files contain certain key features of adjustable-rate mortgages backing Fannie Mae MBS. These features constitute the particular subtype of an adjustable-rate Fannie Mae MBS pool identified in the matrix file. Subtypes are only applicable to adjustable-rate securities. The latest subtype definitions are available after 7 a.m. ET, and will include any new subtypes created the prior day.

Our consolidated listings of all Single-Family (SF) and Multifamily (MF) subtypes and attributes are available in .csv and .xls format. Please allow automatic updating when opening the .xls file with your spreadsheet application.

You may also select specific Single-Family ARM Fannie Mae MBS subtype groups, which are displayed by reference index in text format (.txt).

trigger.tr
SF_Consolidated_report.csv
MF_Consolidated_report.csv
snglix99.txt
89_WSJ_Prime_CMT.txt
snglix59.txt
79_1-year_Weekly_CMT.txt
69_WSJ_1-year_LIBOR.txt
49_Wkly_Auction_Avg_Yield-6mo_T_Bills.txt
snglix39.txt
29_WSJ_1-year_LIBOR.txt
19_WSJ_1-year_LIBOR.txt
Z9_WSJ_1-year_LIBOR.txt
Y9_Golden_West_Fin_Cost_of_Deposits-CODI.txt
X9_1-year_Treasury_Security-weekly-rate.txt
snglixw9.txt
snglixt9.txt
V9_Natl_Avg_Contract_Mortgage_Rate.txt
U9_1-year_Weekly_CMT.txt
S9_Cum_Avg_of_26_wks_6-month_T-bill_Wkly_Avg.txt
R9_Fannie_Mae_60-day_Required_Yield.txt
Q9_FHLMC_Fed_COF.txt
snglixo9.txt
snglixn9.txt
P9_Wall_Street_Journal_1-year_LIBOR.txt
M9_Freddie_Mac_Federal_Cost_of_Funds.txt
L9_Cum_Avg_of_Prev_12_mo_1_yr_CMT_Monthly.txt
K9_GW_Financial_Avg_Deposit_Acct_Rate_COSI.txt
J9_Auct_Avg_on_Ann_Dscnt_Basis_1-yr_T-bill.txt
snglixi9.txt
snglixg9.txt
H9_6-month_Weekly_Auction_Avg_Investment.txt
snglixd9.txt
F9_5-year_CMT_Weekly.txt
E9_3-year_CMT_Weekly.txt
snglix98.txt
C9_1-year_Treasury_Security_Weekly.txt
B9_12-month_Average_of_1-year_CMT.txt
A9_Cum_Avg_of_Prev_12_mo_6-mo_Treasury.txt
snglix88.txt
snglix78.txt
snglix68.txt
snglix58.txt
snglix48.txt
snglix38.txt
snglixz8.txt
snglixy8.txt
snglix28.txt
snglix18.txt
snglixx8.txt
snglixw8.txt
snglixv8.txt
snglixu8.txt
snglixt8.txt
snglixs8.txt
snglixr8.txt
snglixq8.txt
snglixp8.txt
snglixo8.txt
snglixn8.txt
snglixm8.txt
snglixl8.txt
snglixk8.txt
snglixj8.txt
snglixi8.txt
snglixh8.txt
snglixg8.txt
snglixf8.txt
snglixe8.txt
snglixd8.txt
snglixc8.txt
snglixb8.txt
snglixa8.txt
snglix97.txt
snglix87.txt
snglix77.txt
snglix67.txt
snglix57.txt
snglix47.txt
snglix37.txt
snglix27.txt
snglix17.txt
snglixz7.txt
snglixy7.txt
snglixx7.txt
snglixw7.txt
snglixv7.txt
snglixu7.txt
snglixt7.txt
snglixs7.txt
snglixr7.txt
snglixq7.txt
snglixp7.txt
snglixo7.txt
snglixn7.txt
snglixm7.txt
snglixl7.txt
snglixk7.txt
snglixj7.txt
snglixi7.txt
snglixh7.txt
snglixg7.txt
snglixf7.txt
snglixe7.txt
snglixd7.txt
snglixc7.txt
snglixb7.txt
snglixa7.txt
snglix96.txt
snglix86.txt
snglix76.txt
snglix66.txt
snglix56.txt
snglix46.txt
snglix36.txt
snglixz6.txt
snglix26.txt
snglix16.txt
snglixy6.txt
snglixx6.txt
snglixw6.txt
snglixv6.txt
snglixu6.txt
snglixt6.txt
snglixs6.txt
snglixr6.txt
snglixq6.txt
snglixp6.txt
snglixo6.txt
snglixn6.txt
snglixm6.txt
snglixl6.txt
snglixk6.txt
snglixj6.txt
snglixi6.txt
snglixh6.txt
snglixg6.txt
snglixf6.txt
snglixe6.txt
snglixd6.txt
snglixc6.txt
snglixb6.txt
snglixa6.txt
snglix95.txt
snglix85.txt
snglix75.txt
snglix65.txt
snglix55.txt
snglix45.txt
35_WSJ_6-month_LIBOR.txt
25_WSJ_6-month_LIBOR.txt
snglixz5.txt
snglix15.txt
Y5_Wells_Fargo_Cost_of_Savings_Monthly.txt
snglixx5.txt
W5_1_year_Treas_Cum_Avg_Last_12_Months.txt
V5_1-year_Weekly_CMT.txt
U5_WACHOVIA_COST_OF_SAVINGS_INDEX_(79).txt
snglixt5.txt
snglixs5.txt
snglixr5.txt
snglixq5.txt
snglixp5.txt
snglixo5.txt
N5_WSJ-1YR-LIBOR.txt
snglixm5.txt
snglixl5.txt
K5_Cum_Avg_of_Prev_12_mo_1-yr_Treasury.txt
snglixi5.txt
snglixh5.txt
J5_WSJ_1_Year_LIBOR.txt
snglixg5.txt
snglixf5.txt
E5_WSJ_1_year_LIBOR.txt
snglixd5.txt
snglixc5.txt
snglixb5.txt
snglixa5.txt
9__6-month_Auction_Average_Secondary_Market.txt
8__3-yr_CMT.txt
7__FHLB_Contract_Rate.txt
6__6-month_Auction_Avg_Investment_Rate.txt
5_Freddie_Mac_Federal_Cost_of_Funds.txt
4__6-month_Auction_Avg_Discount_Rate.txt
3__5-year_CMT.txt
Z__12-month_Average_of_Monthly_1-yr_CMT.txt
2__1-year_CMT.txt
1__11th_District_Cost_of_Funds_Index.txt
Y__Telerate_1yr_LIBOR.txt
X__Telerate_6-Month_LIBOR.txt
W_1-year_WSJ_LIBOR.txt
V__Cum_Avg_of_Previous_12_months_1-yr_CMT.txt
U__Wall_Street_Journal_1-month_LIBOR.txt
T__5-year_CMT_Monthly_Average.txt
S__Cum_Avg_of_26_wks_6-month_T-bill_Wkly_Avg.txt
snglixr.txt
snglixp.txt
Q__7-year_CMT.txt
O__Wall_Street_Journal_3-month_LIBOR.txt
N_12-month_Average_of_1-year_CMT.txt
M_6-month_WSJ_LIBOR.txt
snglixj.txt
L_Freddie_Mac_Federal_Cost_of_Funds_QTRLY.txt
K__Wall_Street_Journal_6-month_LIBOR.txt
I__Monthly_Avg_Secondary_Mrkt_Rate_on_6-mo_CD.txt
H__3-year_CMT_Monthly.txt
G__Wkly_Avg_of_Secndry_Mrkt_Rates_on_6-mo_CD.txt
snglixd.txt
snglixc.txt
F__10-year_CMT_Weekly_Average.txt
E__2-year_CMT.txt
B__Monthly_Avg_of_6-mo_Wkly_Auct_Avg_Rates.txt
A__1-year_CMT_Monthly.txt
snglix35.txt
snglix25.txt
M9_Natl_Median_COF_for_SAIF-insured_Inst.txt
5__FHLB_Monthly_Median_Cost_of_Funds.txt
L__Natl_Avg_COF_for_SAIF-insured_Inst.txt
snglixy5.txt
MF_Consolidated_report.xls
SF_Consolidated_report.xls

Last Revised: 5/22/09