Bloomberg volatility cube

vin250686 · December 23rd, 2008, 1:04 pm

We have been provided with bloomberg vols cube VCUB for caps, we need vols for caplet in a different maturity and strike from the ones displayed. we need to interpolate, do we have to use a cubic spline interpolation? could you suggest the easyiest source to learn how to do it? can we at least linearly interpolate beetween strikes? have you ever heard about the "hump function"? is it good for interpolation between maturities?thx

gzip · December 24th, 2008, 3:10 pm

I think that market practice is to use SABR. See attached preprint by his creator (formerly at Bloomberg)