Questions tagged [local]

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Local volatility from Impled Volatilty by Dupire (interpolation)

Hellow, I'm doing my final project and now i have to implement Dupire's formula to get local volatilities from Implied volatilities. I have already got the implied volatilities by Newton so i have the ...
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Fast Monte Carlo of Local Volatility Model

I want to compute option prices via a Monte Carlo simulation. The model implemented is a Markov process, following the SDE : d X_t = alpha * dt + beta^(1/2) * d W_t ...
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what is the formula for local vol , as a function of implied vol, AND why am i getting a negative denominator?

i am seeing different formulas at different places on stack exchange, so not sure! eg if denominator has a term y^2/w^2, or y/w^2 or 1/w or -1/w and also, whatever formula i use, i get a negative ...