This question asks us what the notional principal of a swap should be to achieve the desired duration. Since the question asks us to achieve a target duration of 3 but gives us 3 different swaps (3-4-5 years).
The question uses the swap maturity of year 5 without providing an explanation. Is the reason that they use year 5 due to the fact that the original duration of the fixed income portfolio has a duration of 5?
But interest rate swap doesn’t require exchange of notional principal compared to currency swap right? So why must we pick swap C, instead of swap A which give us answer C? Thank you so much.
so you do not have to roll over multiple times… with the highest duration - your notional principal would be small - and additionally you would be matching the duration of the liability as well.
if you used a smaller duration swap - you need to invest in the swap so many more times (roll it over on expiry). while with a larger duration swap - you achieve your cash flow swap needs, without having to roll over the swap so many more times.