Operational Research

, 4:167 | Cite as

Selecting Value-at-Risk methods according to their hidden characteristics

  • Lampros Kalyvas
  • Nikolaos Dritsakis
  • Costas Siriopoulos
  • Chris Grose
Article

Abstract

The foremost concern of a modern risk manager is to estimate Value-at-Risk (VaR), that is the maximum loss likely to occur over the next two weeks for a given confidence level. Although widely spread as a standard measure for quantifying market risk, most of the techniques involved in measuring VaR are based on unrealistic assumptions. The purpose of this paper is to highlight the deficiencies of these techniques and to illustrate the exact steps for the estimation of portfolio-VaR according to all basic methods, namely, the variance-covariance (VC), the historical simulation method (HS) and the Monte Carlo simulation method (MC). Furthermore, the paper examines the accuracy of both the HS and the MC methods according to the Basel II regulatory framework.

Keywords

Traditional VaR methods Historical Simulation Basel Committee Back Testing 

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Copyright information

© Hellenic Operational Research Society 2004

Authors and Affiliations

  • Lampros Kalyvas
    • 1
  • Nikolaos Dritsakis
    • 2
  • Costas Siriopoulos
    • 3
  • Chris Grose
    • 4
  1. 1.Department for the Supervision of Credit and Financial InstitutionsBank of GreeceAthensGreece
  2. 2.Department of Applied InformaticsUniversity of MacedoniaThessalonikiGreece
  3. 3.Department of Business AdministrationUniversity of PatrasPatrasGreece
  4. 4.Investors Relations OfficeCompucon S.A.ThermiGreece

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