Sinkable bond

Panoramix · August 24th, 2012, 7:44 am

Hi everyone,i am trying to replicate the same YTM i found in BBG as a small step for my pricer. Recently i was told to cover also part of the sinkable bonds and among them the Irish ones. In order to better understand this kind of security i tried to compute the YTM.Unluckily i am not able to get the same result and maybe i did not understand in a proper way the nature of the security as well as the structure.I attached the file in which i assumed the constant sunk rate and then the one provided by BBG.Any suggestion is really appreciated Pano