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leo2000
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Local Volatility with Large Time-Steps- The CLV Framework

March 17th, 2016, 6:53 am

Hello Everyone,Recently I have finalized an article on a local volatility model which allows for large time-steps simulation. The model is called the CLV model (Collocating Local Volatility) which is available at The CLV Framework- A Fresh Look at Efficient Pricing with Smile.I hope you find this article useful.If you have any questions and/or comments please let me know. I'm willing to share the MATLAB code so that you can also "play" with the framework.Best,LGHere is the abstract:It is a market practice to price exotic derivatives, like callable basket options, with the local volatility model (B. Dupire, 1994, E. Derman & I. Kani, 1994) which can, contrary to stochastic volatility frameworks, handle multi-dimensionality easily. On the other hand a well-known limitation of the nonparametric local volatility model is the necessity of a short-stepping simulation, which, in high dimensions, is computationally expensive. In this article we propose a new local volatility framework called the Collocating Local Volatility (CLV) model which allows for large Monte Carlo steps and therefore it is computationally efficient. The CLV model is by its construction guaranteed to be almost perfectly calibrated to implied volatility smiles/skews at a given set of expiries. Additionally, the framework allows to control forward volatilities without affecting the fit to plain vanillas. The model requires only a fraction of a second for complete calibration to simple vanilla products and, finally, it allows for calculation of the Greeks without re-simulating of the Monte Carlo paths. We will apply the CLV model for pricing FX barrier options and also show that under this new framework we can easily price Bermudan options on 100-dimensional baskets of correlated underlyings within just a few seconds. Illustrative examples will be also presented.
Last edited by leo2000 on March 16th, 2016, 11:00 pm, edited 1 time in total.