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Superkurtosis

Author

Listed:
  • Stavros Degiannakis

    (Bank of Greece)

  • George Filis

    (University of Patras)

  • Grigorios Siourounis

    (Panteion University of Social and Political Science, and Brown University)

  • Lorenzo Trapani

    (University of Nottingham)

Abstract

Very little is known on how traditional risk metrics behave under intraday trading. We fill this void by examining the finiteness of the returns’ moments and assessing the impact of their infinity in a risk management framework. We show that when intraday trading is considered, assuming finite higher order moments, potential losses are materially larger than what the theory predicts, and they increase exponentially as the trading frequency increases - a phenomenon we call superkurtosis. Hence, the use of the current risk management techniques under intraday trading impose threats to the stability of financial markets, given that capital ratios may be severely underestimated.

Suggested Citation

  • Stavros Degiannakis & George Filis & Grigorios Siourounis & Lorenzo Trapani, 2023. "Superkurtosis," Working Papers 318, Bank of Greece.
    • Handle: RePEc:bog:wpaper:318
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    File URL: https://www.bankofgreece.gr/Publications/Paper2023318.pdf
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    Other versions of this item:

    • Degiannakis, Stavros & Filis, George & Siourounis, Grigorios & Trapani, Lorenzo, 2019. "Superkurtosis," MPRA Paper 96563, University Library of Munich, Germany.
    • Degiannakis, Stavros & Filis, George & Siourounis, Grigorios & Trapani, Lorenzo, 2019. "Superkurtosis," MPRA Paper 94473, University Library of Munich, Germany.

    More about this item

    Keywords

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    JEL classification:

    • E27 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Forecasting and Simulation: Models and Applications
    • C53 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Forecasting and Prediction Models; Simulation Methods

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