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Decoding market reactions: The certification role of EU-wide stress tests

Author

Listed:
  • Durrani, Agha
  • Ongena, Steven
  • Ponte Marques, Aurea

Abstract

We study the market’s reaction to the disclosure of EU-wide stress test results across four periods (2014, 2016, 2018, and 2021). Our novel approach contributes to the literature by studying how stress test disclosures influence both the mean and variance (first and second moments) of bank stock performance, extending beyond previous studies focused mainly on the first moment of equity returns. Using one-factor market and structural Engle–Siriwardane type GARCH models, we find that the publication of stress tests provides new information to the markets: Banks with weaker performance in the tests experience, on average, a reduction in stock returns and an increase in volatility, while the reverse holds for banks performing well. Our findings confirm the important role of stress tests in enhancing transparency and market discipline, thereby supporting investors in assessing the resilience of the banking sector more effectively, particularly during periods of higher uncertainty.

Suggested Citation

  • Durrani, Agha & Ongena, Steven & Ponte Marques, Aurea, 2024. "Decoding market reactions: The certification role of EU-wide stress tests," Economic Modelling, Elsevier, vol. 139(C).
  • Handle: RePEc:eee:ecmode:v:139:y:2024:i:c:s0264999324001858
    DOI: 10.1016/j.econmod.2024.106828
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    More about this item

    Keywords

    Stress test disclosures; Financial stability; Stock markets; Abnormal returns; Volatility;
    All these keywords.

    JEL classification:

    • G01 - Financial Economics - - General - - - Financial Crises
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation
    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes
    • C58 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Financial Econometrics

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