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Measuring Event Risk

Publiceringsår: 2009
Språk: Engelska
Sidor: 265-287
Publikation/Tidskrift/Serie: Journal of Financial Econometrics
Volym: 7
Nummer: 3
Dokumenttyp: Artikel
Förlag: Oxford University Press


This paper decomposes the popular risk measure Value-at-Risk (VaR) into
one jump- and one continuous component. The continuous component corresponds
to general market risk and the jump component is proportional to the event risk as defined in the Basel II accord. We find that event risk, which
is currently not incorporated into most banks’ VaR models, comprises a substantial part of total VaR. It constitutes 30% of the risk for a portfolio of small cap stocks but less than 1% for a portfolio of large cap stocks. The national supervising agency in each membership country is advised by the Basel rules to add an additional capital charge to a bank whose models do not capture event risk. The large variation in event risk, also found across 10 individual stocks, suggests that an approach that varies the capital surcharge, based on the type of asset, should be used by the supervisors.



  • Economics
  • Value-at-Risk
  • Jumps


  • ISSN: 1479-8409

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