Mandelbrot's Extremism

J. Beirlant, W. Schoutens, J.J.J. Segers

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In the sixties Mandelbrot already showed that extreme price swings are more likely than some of us think or incorporate in our models.A modern toolbox for analyzing such rare events can be found in the field of extreme value theory.At the core of extreme value theory lies the modelling of maxima over large blocks of observations and of excesses over high thresholds.The general validity of these models makes them suitable for out-of-sample extrapolation.By way of illustration we assess the likeliness of the crash of the Dow Jones on October 19, 1987, a loss that was more than twice as large as on any other single day from 1954 until 2004.
Original languageEnglish
Place of PublicationTilburg
Number of pages14
Publication statusPublished - 2004

Publication series

NameCentER Discussion Paper


  • exceedances
  • extreme value theory
  • heavy tails
  • maxima


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