On Hurst exponent estimation under heavy-tailed distributions

By Jozef Baruník, Ladislav Kristoufek. 2010

272 citations recorded by the source corpus.

In this paper, we show how the sampling properties of the Hurst exponent methods of estimation change with the presence of heavy tails. We run extensive Monte Carlo simulations to find out how rescaled range analysis (R/S), multifractal detrended fluctuation analysis (MF-DFA), detrending moving average (DMA) and generalized Hurst exponent approach (GHE) estimate Hurst exponent on independent series with different heavy tails. For this purpose, we generate independent random series from stable distribution with stability exponent α changing from 1.1 (heaviest tails) to 2 (Gaussian normal distribution) and we estimate the Hurst exponent using the different methods. R/S and GHE prove to be robust to heavy tails in the underlying process. GHE provides the lowest variance and bias in comparison to the other methods regardless the presence of heavy tails in data and sample size. Utilizing this result, we apply a novel approach of the intraday time-dependent Hurst exponent and we estimate the Hurst exponent on high frequency data for each trading day separately. We obtain Hurst exponents for S&P500 index for the period beginning with year 1983 and ending by November 2009 and we discuss the surprising result which uncovers how the market’s behavior changed over this long period.

Subfields: Economics and Econometrics, Finance, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/2a2d220fd170dca10d3bf213de21383cd31baa30

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In Economics and Econometrics

  1. Ladislav Kristoufek
  2. Miloslav S. Vosvrda
  3. T. Di Matteo
  4. Raffaello Morales
  5. Ruggero Gramatica
  6. Tomaso Aste
  7. Matthieu Garcin
  8. Ayoub Ammy-Driss

In Finance

  1. Ladislav Kristoufek
  2. Miloslav S. Vosvrda
  3. T. Di Matteo
  4. Raffaello Morales
  5. Ruggero Gramatica
  6. Tomaso Aste
  7. Ayoub Ammy-Driss
  8. Matthieu Garcin

In Statistical and Nonlinear Physics

  1. Ladislav Kristoufek
  2. Miloslav S. Vosvrda
  3. T. Di Matteo
  4. Tomaso Aste
  5. Raffaello Morales
  6. Ruggero Gramatica
  7. Raphael Heiko Heiberger
  8. Gangjin Wang

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