Evaluates the annual yield of a discounted security.

settlement—The date on which payment is made to settle a trade. For a more detailed discussion on dates see Chapter 8, Working with Date/Time Data in the .

maturity—The date on which the bond comes due, and principal and accrued interest are paid. For a more detailed discussion on dates see Chapter 8, Working with Date/Time Data in the .

price—Price per $100 face value of the security.

redemption—Redemption value per $100 face value of the security.

basis—The method for computing the number of days between two dates. It should be 0, 1, 2, 3, or 4.

result—The annual yield for a discounted security. If no result can be computed, NaN is returned.

Double—If present and nonzero, double precision is used.

Function DISCOUNT_YLD computes the annual yield for a discounted security.

It is computed using the following:

In the equation above, B represents the number of days in a year based on the annual basis, and DSM represents the number of days starting with the settlement date and ending with the maturity date.

In this example, DISCOUNT_YLD computes the annual yield for a discounted security which is selling at $95.40663 with the settlement date of July 1, 1995, and maturity date of July 1, 2005, using the US (NASD) 30/360 day count method.

settlement = VAR_TO_DT(1995, 7, 1)

maturity = VAR_TO_DT(2005, 7, 1)

price = 95.40663

redemption = 105.

basis = 1

PRINT, DISCOUNT_YLD(settlement, maturity, price, redemption, $

   basis)

; PV-WAVE prints: 0.0100552