July 21st, 2007, 11:22 am
ok,the payoff is: MAX(U1 * NOK/EUR - U2 - X,0) The U2 and Strike are in Euros. 1. this implies you have U1 in NOK, U2 in EUR, and so the strike AND the notional must be in EUR. This means also your payoff formula is wrong because your currency exchange rate should be EUR/NOK as below (this reads EUR per NOK also noted NOK-EUR which is the invert of the standard currency market quote EUR-NOK). payoff should be : MAX(U1 * EUR/NOK - U2 - X,0) = MAX(U1 * EUR-NOK^(-1) - U2 - X,0).2. from there it's all easy, this is a simple spread option. - Start by calculing the correlation of U1 with EUR-NOK and calculate the cross vol for that asset (v1). Be careful with the signs !.- Calculate the correlation (corr) of the cross asset (A1 = U1 / EUR-NOK) with U2. - Evaluate the spread option between A1 (vol =v1) and U2 (vol=v2), using the correlation corr as above.Other possibilities3. your payoff was right, meaning your client wants you to "quanto" U1 into a scalar which happens to be stochastic. It means nothing economically, but maybe your client has a good reason for it. Just ask the client if the payoff formula is right though.4. your payoff was right, BUT U1 is in EUR, as U2, Strike and Notional are in NOK and not in EUR as mentioned. Follow the same path as 2. but this time you will get a price in NOK per spread.Hope it helpsJerome
Last edited by
Jezza on July 20th, 2007, 10:00 pm, edited 1 time in total.