I need to calculate the annual yield for a Boeing bond. It actually gives me the annual yield on the website, but I need to be able to show my work and I am not getting the same thing they are. Here is the information: The Boeing Co.-Bond has a maturity date of 4/15/2043 and offers a coupon of 7.8750%. The payment of the coupon will take place 2,0 times per biannual on the 15.10.. At the current price of 4.084558 USD this equals a annual yield of 4.13%. The Boeing Co.-Bond was issued on the 4/15/1993 with a volume of 175 M. USD