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 Volatility surfaces : a first attempt
Issued on October 02 2011 par Strategies Options
Implied volatility is neither constant for every strike, nor for every expiry.
Once one is using a pricing model, most of them shows up that implied volatility is not constant at all. In other words, implied volatility differs for strikes and time.
I - What a volatility surface is ? This is a 3D representation of how volatility can be varrying against strikes and time. It's somethimes derived against moneyness or delta. The main purpose of a volatility surface is to price and hedge options according to what market prices express in order to adjust pricing models with reality. II - How to use it ? To price and evaluate positions, it's interesting to see how P&L would be affected by volatility moves, as priced by the market in the Volatility Skew and the Volatility Smile. The way a volatility surface evolves across the time can be of first interest when playing with volatility. III - Representations Implied volatility Surface using CAC40 Index Options  Next : Asset Path Simulation Previous : Volatility : Trading Formulae Related Pdf : - Pdf on Volatility Surfaces - VOLATILITY SMILES, SURFACES AND OPTION PRICES - Modeling the Implied Volatility Surface - Implied Volatility Surface - Volatility Surfaces : Theory, Rules of Thumb, and Empirical Evidence OPTIONS 101 - INDEX OPTIONS 101 - CHAPTER I OPTIONS 101 - CHAPTER II OPTIONS 101 - CHAPTER III OPTIONS 101 - CHAPTER IV OPTIONS 101 - CHAPTER V OPTIONS 101 - CHAPTER VI Strategies Options |
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