September 23rd, 2014, 1:08 pm
I am trying to see how the dv01 changes under different interpolation methods. I find that on a 10y30y usd libor swap with OIS discounting, the dv01 with linear interpolation of zero rates gives adv01 that is nearly 10% lower than that of monotone convex. I was surprised at such a large difference with a change in interpolation method. Am I doing something incorrect...or is this something well known among practitioners ?