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Published byClinton Henry Modified over 6 years ago
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Black-Scholes Model for European vanilla options
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Black-Scholes formulas for European vanilla options
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Pricing American vanilla options
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Pricing exotic options under Black-Scholes framework
Multi-asset options Barrier options Asian options Lookback options Forward start option, shout option, compound options
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Beyond the Black-Scholes World
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Implied volatility The value for volatility that makes the theoretical option value and the market price the same
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Volatility smile Finance.yahoo.com
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continued
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Improved models Local volatility model Stochastic volatility model
Jump diffusion model Others: discrete hedging, transaction cost
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Local volatility model
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No closed form solution
How to identify ?
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continued
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How to use the local volatility model
Calibration of the model: Identify the volatility function from the market prices of vanilla options Price non-traded contracts by using the model
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Stochastic Volatility Model
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Option Pricing
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Option pricing with non-traded underlying
So far, the underlying is assumed to be a traded asset. The underlying is a consumption asset Oil Short selling is prohibited Pricing of forward contract on oil The underlying is a non-traded asset Volatility, interest rate Both long and short positions are prohibited No arbitrage pricing
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Continued (stochastic volatility model)
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Continued
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The Market Price of Risk
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Risk Neutral Processes
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Two Named Models Hull White Heston
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Example 1: Hull-White model
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Example 2: Heston Model
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Jump Diffusion Model Poisson process
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Jump-diffusion Process
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Hedging
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Ito Lemma
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Two special models Merton (1976) Wilmott et al. (1998)
to hedge the diffusion only Wilmott et al. (1998) to hedge both jump and diffusion as much as we can
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Merton’s Model (1976) Jump risks are diversified
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Wilmott et al.’s Model Hedging strategy
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Continued
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Continued Under this best strategy, we let
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Summary
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Purpose Understand the market better Price options at the OCT market
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Beyond the Black-Scholes World
Local volatility model Stochastic volatility model Jump diffusion model
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Parameters , J Local volatility model: =(S,t)
Stochastic volatility model: Hull-White model (3 parameters) Heston model (2 parameters) Jump diffusion model , J
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Option Pricing at the OTC Market
Model calibration Extend the model to exotic options Solution
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