Volatility made observable at last

8 years 13 days ago
Volatility made observable at last
— The Cartier-Perrin theorem, which was published in 1995 and is expressed in the language of nonstandard analysis, permits, for the first time perhaps, a clear-cut mathematical definition of the volatility of a financial asset. It yields as a byproduct a new understanding of the means of returns, of the beta coefficient, and of the Sharpe and Treynor ratios. New estimation techniques from automatic control and signal processing, which were already successfully applied in quantitative finance, lead to several computer experiments with some quite convincing forecasts. Keywords—Time series, quantitative finance, trends, returns, volatility, beta coefficient, Sharpe ratio, Treynor ratio, forecasts, estimation techniques, numerical differentiation, nonstandard analysis.
Michel Fliess, Cédric Join, Fréd&eac
Added 13 May 2011
Updated 13 May 2011
Type Journal
Year 2011
Where CORR
Authors Michel Fliess, Cédric Join, Frédéric Hatt
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