Market Implied Probability Distributions and Bayesian Skew Estimation

Details Market Implied Probability Distributions and Bayesian Skew Estimation Market Implied Probability Distributions and Bayesian Skew Estimation

2009-11-04

arxiv.org/abs/0911.0805v1

Economy

Quantitative Finance

Pricing of Securities

Scientific paper

We review and illustrate how the volatility smile translates into a probability distribution, the market-implied probability distribution representing believes priced in. The effects of changes in the smile are examined. Special attention is given to the effects of slope, which might appear at first counter-intuitive. We then show how Bayesian methods can be used to deal with sparse real market data. With each skew in a parametric model we associate a probability. This is illustrated with an example, for which multivariate parameter distributions are derived. We introduce the fuzzy smile (or fuzzy skew) as a visual illustration of the skew distribution.

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