Macaulay duration matched strategy is a key tool in bond portfolio immunization. It is well known that if term structures are not flat or changes are not parallel, then Macaulay duration matched portfolio can not guarantee adequate immunization. In this paper the approximate duration is proposed...

Both the UK spot and futures markets in short term interest rates are found to react strongly to surprises in the scheduled announcements of the repo rate and RPI. Therefore these announcements should also affect the market for options on short term interest rates. Because the repo rate and RPI...