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ARM Indexes: More Treasury Securities, 1977-1979


Full Name: Treasury Security Adjusted to a Constant Maturity of (2,7,10,20,30) Year(s)

Source: Federal Reserve Board
Compiled by: HSH Associates, Riverdale, NJ

The Treasury Security (or "T-Sec") indexes are calculated by the Treasury Department and reported by the Federal Reserve; these indexes have both weekly and monthly values. Most lenders use the weekly value on their ARMs. These indexes reflect the state of the economy, and respond quickly to economic changes.

Your new interest rate will be determined by the T-Sec value 30 to 45 days before your next rate change. A margin (which averages 2.75 percent) is added to this index by the lender when your ARM's rate is adjusted.

To compute your new mortgage rate, take the correct index value and add your margin; then, round the result to the nearest one-eighth percent. (Some contracts call for rounding to the next highest one-eighth percent.) If, for example, the index value is 6.04 percent and your margin is 2.75 percent, the sum is 8.79%; rounding to the nearest one-eighth percent would set your ARM rate at 8.75%. Remember to check for any 'caps' on your ARM. Usually, they limit any rate changes to 2 percent over (or under) your old interest rate. Your mortgage disclosure specifies the exact index, whether the weekly or monthly value applies, the lead time for your index, the margin, and any caps.

See our ARM Check Kit for complete instructions and worksheets.

For the latest index values, see the Current Indexes Table.

Please Note: The Treasury Constant Maturity series are BIG files. Some browsers (and machines with limited memory) may not be able display these files in their entirety. If you don't see the entire history, save the file and view it off-line.


Week		2 Year T-Sec	7 Year T-Sec	10 Year T-Sec	20 Year T-Sec	30 Year T-Sec
Ending		Weekly	Monthly	Weekly	Monthly	Weekly	Monthly	Weekly	Monthly	Weekly	Monthly

07-Jan-77     5.53     5.90     6.59     6.92     6.92     7.21  First compiled       n.a.     n.a.    30 Year T-Secs
14-Jan-77     5.85              6.97              7.24           01-Oct-93            n.a.             first compiled
21-Jan-77     6.01              6.99              7.29                                n.a.             25-Feb-77
28-Jan-77     6.15              7.09              7.36                                n.a.
04-Feb-77     6.18     6.09     7.17     7.16     7.40     7.39                       n.a.     n.a.
11-Feb-77     6.03              7.12              7.35                                n.a.
18-Feb-77     6.03              7.13              7.35                                n.a.
25-Feb-77     6.14              7.24              7.47                                7.80
04-Mar-77     6.11     6.09     7.22     7.20     7.46     7.46                       7.81     7.80
11-Mar-77     6.12              7.23              7.49                                7.82
18-Mar-77     6.08              7.17              7.45                                7.78
25-Mar-77     6.06              7.18              7.45                                7.77
01-Apr-77     6.05     5.96     7.22     7.11     7.45     7.37                       7.79     7.73
08-Apr-77     6.03              7.22              7.45                                7.78
15-Apr-77     5.88              7.06              7.32                                7.71
22-Apr-77     5.91              7.04              7.31                                7.68
29-Apr-77     6.04              7.14              7.40                                7.76
06-May-77     6.16     6.25     7.27     7.26     7.46     7.46                       7.81     7.80
13-May-77     6.29              7.31              7.50                                7.85
20-May-77     6.31              7.25              7.46                                7.79
27-May-77     6.27              7.21              7.41                                7.76
03-Jun-77     6.20     6.13     7.17     7.05     7.38     7.28                       7.74     7.64
10-Jun-77     6.16              7.13              7.35                                7.68
17-Jun-77     6.11              7.01              7.24                                7.61
24-Jun-77     6.11              7.01              7.25                                7.61
01-Jul-77     6.07     6.27     6.98     7.12     7.22     7.33                       7.57     7.64
08-Jul-77     6.15              7.08              7.33                                7.63
15-Jul-77     6.22              7.09              7.31                                7.64
22-Jul-77     6.34              7.12              7.32                                7.64
29-Jul-77     6.38              7.18              7.35                                7.67
05-Aug-77     6.52     6.61     7.27     7.24     7.43     7.40                       7.71     7.68
12-Aug-77     6.60              7.30              7.45                                7.73
19-Aug-77     6.70              7.29              7.44                                7.72
26-Aug-77     6.64              7.18              7.34                                7.63
02-Sep-77     6.56     6.71     7.11     7.21     7.27     7.34                       7.59     7.64
09-Sep-77     6.59              7.15              7.29                                7.60
16-Sep-77     6.73              7.22              7.35                                7.64
23-Sep-77     6.76              7.22              7.36                                7.66
30-Sep-77     6.82              7.26              7.40                                7.68
07-Oct-77     6.88     7.11     7.32     7.44     7.43     7.52                       7.71     7.77
14-Oct-77     7.14              7.47              7.54                                7.79
21-Oct-77     7.22              7.47              7.55                                7.79
28-Oct-77     7.17              7.50              7.57                                7.81
04-Nov-77     7.22     7.14     7.56     7.46     7.65     7.58                       7.88     7.85
11-Nov-77     7.16              7.47              7.60                                7.87
18-Nov-77     7.11              7.41              7.55                                7.83
25-Nov-77     7.12              7.42              7.54                                7.82
02-Dec-77     7.12     7.18     7.45     7.59     7.56     7.69                       7.84     7.94
09-Dec-77     7.15              7.54              7.63                                7.88
16-Dec-77     7.15              7.56              7.66                                7.91
23-Dec-77     7.19              7.63              7.73                                7.98
30-Dec-77     7.25              7.70              7.79                                8.04

06-Jan-78     7.26     7.49     7.72     7.86     7.83     7.96                       8.08     8.18
13-Jan-78     7.59              7.93              8.01                                8.21
20-Jan-78     7.55              7.89              7.98                                8.19
27-Jan-78     7.52              7.89              7.98                                8.21
03-Feb-78     7.47     7.57     7.85     7.94     7.96     8.03                       8.20     8.25
10-Feb-78     7.52              7.91              8.00                                8.24
17-Feb-78     7.61              7.99              8.08                                8.28
24-Feb-78     7.64              7.99              8.08                                8.29
03-Mar-78     7.59     7.58     7.95     7.95     8.04     8.04                       8.25     8.23
10-Mar-78     7.56              7.94              8.03                                8.23
17-Mar-78     7.52              7.91              8.00                                8.20
24-Mar-78     7.54              7.90              7.98                                8.19
31-Mar-78     7.65              8.02              8.12                                8.30
07-Apr-78     7.71     7.74     8.04     8.06     8.14     8.15                       8.32     8.34
14-Apr-78     7.68              8.04              8.15                                8.35
21-Apr-78     7.72              8.04              8.12                                8.31
28-Apr-78     7.87              8.13              8.21                                8.38
05-May-78     7.92     8.01     8.16     8.25     8.28     8.35                       8.40     8.43
12-May-78     7.99              8.25              8.35                                8.44
19-May-78     8.01              8.26              8.35                                8.42
26-May-78     8.09              8.30              8.39                                8.46
02-Jun-78     8.11     8.24     8.34     8.40     8.41     8.46                       8.49     8.50
09-Jun-78     8.07              8.30              8.38                                8.45
16-Jun-78     8.13              8.35              8.41                                8.45
23-Jun-78     8.36              8.46              8.49                                8.52
30-Jun-78     8.45              8.50              8.59                                8.59
07-Jul-78     8.45     8.49     8.52     8.55     8.62     8.64                       8.63     8.65
14-Jul-78     8.49              8.57              8.68                                8.69
21-Jul-78     8.50              8.56              8.65                                8.66
28-Jul-78     8.51              8.55              8.63                                8.63
04-Aug-78     8.37     8.37     8.40     8.38     8.46     8.41                       8.49     8.47
11-Aug-78     8.21              8.32              8.39                                8.45
18-Aug-78     8.41              8.43              8.48                                8.54
25-Aug-78     8.44              8.36              8.37                                8.45
01-Sep-78     8.46     8.57     8.39     8.42     8.38     8.42                       8.45     8.47
08-Sep-78     8.45              8.35              8.34                                8.41
15-Sep-78     8.45              8.33              8.31                                8.38
22-Sep-78     8.62              8.46              8.46                                8.50
29-Sep-78     8.73              8.54              8.55                                8.59
06-Oct-78     8.69     8.85     8.56     8.64     8.58     8.64                       8.63     8.67
13-Oct-78     8.70              8.52              8.54                                8.60
20-Oct-78     8.80              8.63              8.62                                8.66
27-Oct-78     8.96              8.69              8.69                                8.70
03-Nov-78     9.44     9.42     8.82     8.80     8.82     8.81                       8.77     8.75
10-Nov-78     9.48              8.84              8.86                                8.81
17-Nov-78     9.31              8.76              8.77                                8.72
24-Nov-78     9.35              8.78              8.78                                8.73
01-Dec-78     9.56     9.72     8.88     9.03     8.85     9.01                       8.78     8.88
08-Dec-78     9.50              8.86              8.86                                8.80
15-Dec-78     9.54              8.95              8.95                                8.86
22-Dec-78     9.93              9.19              9.14                                8.98
29-Dec-78     9.98              9.22              9.14                                8.95

05-Jan-79     9.93     9.86     9.21     9.14     9.14     9.10                       8.96     8.94
12-Jan-79     9.92              9.22              9.15                                8.98
19-Jan-79     9.91              9.21              9.16                                8.98
29-Jan-79     9.80              9.06              9.04                                8.89
02-Feb-79     9.62     9.72     8.93     9.11     8.94     9.10                       8.85     9.00
09-Feb-79     9.64              9.05              9.05                                8.96
16-Feb-79     9.68              9.12              9.12                                9.01
23-Feb-79     9.81              9.21              9.17                                9.06
02-Mar-79     9.89     9.79     9.22     9.15     9.18     9.12                       9.08     9.03
09-Mar-79     9.80              9.13              9.11                                9.03
16-Mar-79     9.82              9.16              9.12                                9.03
23-Mar-79     9.79              9.15              9.12                                9.03
30-Mar-79     9.72              9.13              9.09                                9.01
06-Apr-79     9.72     9.78     9.12     9.21     9.09     9.18                       9.01     9.08
13-Apr-79     9.83              9.23              9.18                                9.07
20-Apr-79     9.75              9.20              9.17                                9.08
27-Apr-79     9.80              9.26              9.25                                9.15
04-May-79     9.92     9.78     9.34     9.23     9.36     9.25                       9.24     9.19
11-May-79     9.91              9.34              9.37                                9.27
18-May-79     9.80              9.26              9.28                                9.21
25-May-79     9.63              9.08              9.11                                9.11
01-Jun-79     9.54     9.22     9.01     8.86     9.04     8.91                       9.06     8.92
08-Jun-79     9.41              8.94              8.97                                8.98
15-Jun-79     9.15              8.82              8.88                                8.90
22-Jun-79     9.25              8.87              8.95                                8.93
29-Jun-79     9.00              8.78              8.83                                8.85
06-Jul-79     8.97     9.14     8.74     8.92     8.79     8.95                       8.82     8.93
13-Jul-79     9.03              8.87              8.93                                8.90
20-Jul-79     9.13              8.97              9.01                                8.97
27-Jul-79     9.32              9.00              9.01                                8.99
03-Aug-79     9.27     9.46     8.99     9.05     8.97     9.03                       8.97     8.98
10-Aug-79     9.27              8.95              8.94                                8.93
17-Aug-79     9.38              9.00              9.00                                8.96
24-Aug-79     9.57              9.09              9.06                                9.00
31-Aug-79     9.75              9.23              9.17                                9.05
07-Sep-79    10.04    10.06     9.38     9.38     9.33     9.33                       9.16     9.17
14-Sep-79    10.06              9.34              9.31                                9.15
21-Sep-79    10.08              9.37              9.32                                9.16
28-Sep-79    10.05              9.41              9.38                                9.21
05-Oct-79    10.23    11.49     9.58    10.47     9.53    10.30                       9.32     9.85
12-Oct-79    11.24             10.29             10.09                                9.71
19-Oct-79    11.62             10.56             10.37                                9.88
26-Oct-79    12.44             11.09             10.89                               10.25
02-Nov-79    12.13    11.81    11.00    10.80    10.78    10.65                      10.26    10.30
09-Nov-79    12.15             11.03             10.87                               10.45
16-Nov-79    11.78             10.83             10.69                               10.36
23-Nov-79    12.02             10.91             10.71                               10.35
30-Nov-79    11.27             10.40             10.34                               10.07
07-Dec-79    11.24    11.39    10.35    10.42    10.29    10.39                      10.03    10.12
14-Dec-79    11.57             10.48             10.45                               10.18
21-Dec-79    11.39             10.39             10.37                               10.13
28-Dec-79    11.39             10.49             10.45                               10.18
These files are updated as time permits, and may not always be up to date. To receive the latest values as soon as they're released, subscribe to HSH's Index Update Service. Get major indexes emailed to you - including monthly & daily libor. Click here!

Go to the full list of ARM Index Histories.

HSH Associates makes every reasonable effort to supply complete, accurate information, but assumes no liability for errors.

For the latest available value of this index, see The Latest Adjustable Rate Mortgage Indexes.

Use our free ARM Check Kit to verify your ARM's interest rate.