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by Speedy
September 12th, 2012, 6:48 pm
Forum: Technical Forum
Topic: Normalized swaption volatility
Replies: 23
Views: 237133

Normalized swaption volatility

Pat, would you mind also sending me a copy? (address in profile, or gerdUNDERSCOREzeibigATyahooDOTcom) Thank you very much!
by Speedy
December 22nd, 2009, 4:59 am
Forum: Technical Forum
Topic: pricing quanto options: which vol for forward drift?
Replies: 2
Views: 38362

pricing quanto options: which vol for forward drift?

For an interesting discussion on quanto adjustments, you can have a look at Peter Jaeckel's recent articel "Quanto Skew": http://www.awdz65.dsl.pipex.com/QuantoSkew.pdf
by Speedy
October 15th, 2009, 2:54 am
Forum: General Forum
Topic: Deriving the volatilities from the terminal distribution?
Replies: 6
Views: 35568

Deriving the volatilities from the terminal distribution?

<t>Hi Samuel,If you know the density, in theory you can very easily numerically compute call or put prices and then back out the implied volatilities.In practice, you however need nice-enough numerical densities.In the context where we tried this approach, the numerical densities were less than suff...
by Speedy
June 18th, 2008, 11:55 pm
Forum: Numerical Methods Forum
Topic: Corridor Variance Swaps
Replies: 1
Views: 52858

Corridor Variance Swaps

<t>Hi Farshadb,(i) By simply truncating the replication, you will be missing the contribution of the Levy local time at the barrier, between now and maturity.To see that truncation is not sufficient, you can simply take a flat implied volatility surface: Although the fair strike of a range variance ...
by Speedy
September 17th, 2007, 10:29 pm
Forum: Student Forum
Topic: Short rate model under HJM
Replies: 1
Views: 65438

Short rate model under HJM

<t>You could write down the integrated version of the Ho and Lee SDE:for s >= t, r_s = r_t + sigma (W_s - W_t) + Integral{from t to s} theta_u duYou can plug this into your first g(x,t,T) equation. You'll need to change the order of the integrals for the theta terms.For the Brownian motion, you coul...
by Speedy
August 29th, 2007, 9:20 pm
Forum: Book And Research Paper Forum
Topic: Mikhailov/Nögel on Heston: notation confusion
Replies: 2
Views: 67293

Mikhailov/Nögel on Heston: notation confusion

You are right samyonez, the 'C' of equation 1.10 is the one that has been introduced in equation (Ansatz) 1.6.
by Speedy
June 18th, 2007, 9:10 pm
Forum: General Forum
Topic: How to choose mu or mu(t) to make S(t) a martingale?
Replies: 2
Views: 70284

How to choose mu or mu(t) to make S(t) a martingale?

Sorry, your problem doesn't have a solution with deterministic mu:In case 1. you would need mu(t) = S(t), in case 2. mu(t)= ln S(t) : the dt term need to be zero.
by Speedy
June 18th, 2007, 6:55 pm
Forum: General Forum
Topic: Variance swaps
Replies: 12
Views: 80479

Variance swaps

<t>QuoteOriginally posted by: pedrogarciaHi!!Thank you for your message. However, I cannot understant how I will replicate the log contract with only one strike ATM, because I cannot create a porftolio of put and calls (I have not slope with only one value..).If you really only have one (ATM) vol av...
by Speedy
June 5th, 2007, 7:01 pm
Forum: General Forum
Topic: gamma swap
Replies: 15
Views: 148902

gamma swap

<r>There's a gamma swap term sheet on page 144 of Hans Buehler's dissertation:<URL url="http://www.math.tu-berlin.de/~buehler/dl/HansBuehlerDiss.pdf"><LINK_TEXT text="http://www.math.tu-berlin.de/~buehler/d ... erDiss.pdf">http://www.math.tu-berlin.de/~buehler/dl/HansBuehlerDiss.pdf</LINK_TEXT></URL...
by Speedy
May 30th, 2007, 5:44 pm
Forum: Student Forum
Topic: help on a project topic
Replies: 5
Views: 71737

help on a project topic

Covariance swaps - they work like correlation swaps, but you don't divide by the realized variances.
by Speedy
May 22nd, 2007, 9:58 pm
Forum: Student Forum
Topic: Questions on pricing of basket option
Replies: 4
Views: 72827

Questions on pricing of basket option

<t>Sure, approximations are used:If you know all the components' dynamics and the relevant correlations, you need a perfect price and have pleanty of computation time to spare on the basket option, go ahead, do a Monte Carlo and finite differences greeks.In reality, analytic approximations often are...