MDURATION Function

The MDURATION function is one of the financial functions. It is used to calculate the modified Macaulay duration of a security with an assumed par value of $100.

The MDURATION function syntax is:

MDURATION(settlement, maturity, coupon, yld, frequency[, [basis]])

where

settlement is the date when the security is purchased.

maturity is the date when the security expires.

coupon is the annual coupon rate of the security.

yld is the annual yield of the security.

frequency is the number of interest payments per year. The possible values are: 1 for annual payments, 2 for semiannual payments, 4 for quarterly payments.

basis is the day count basis to use, a numeric value greater than or equal to 0, but less than or equal to 4. It is an optional argument. It can be one of the following:

Numeric value	Count basis
0	US (NASD) 30/360
1	Actual/actual
2	Actual/360
3	Actual/365
4	European 30/360

Note: dates must be entered by using the DATE function.

The values can be entered manually or included into the cell you make reference to.

To apply the MDURATION function,

1. select the cell where you wish to display the result,
2. click the Insert function
   icon situated at the top toolbar,
   or right-click within a selected cell and select the Insert Function option from the menu,
   or click the
   icon situated at the formula bar,
3. select the Financial function group from the list,
4. click the MDURATION function,
5. enter the required arguments separating them by commas,
6. press the Enter button.

The result will be displayed in the selected cell.

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