Definition. This function returns the yield of a discounted security as an annual interest rate in arrears. It is used for U.S. treasury bills.
Settlement (required) The date when the ownership of the security changes
Maturity (required) The date of the repayment of the certified par value
Pr (required) The price of the security on the day of settlement as a percentage; it must be interpreted as if the par value of the security was 100 monetary units
There are the following requirements:
Settlement and Maturity require a date specification without a time; decimal places are truncated. Invalid date specifications return the
If Pr is not positive, TBILLYIELD() returns the ...