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Reprint of: Key audit matters disclosures and informed traders

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  • Rezaee, Zabihollah
  • Homayoun, Saeid

Abstract

We examine whether the audit regulation of disclosing key audit matters (KAM) provides value-relevant information to short sellers as informed investors. The theoretical underpinning for examining short sellers' ability and incentives to use KAM disclosures in their stock valuation implications is based on a prediction theory and a skilled information processing theory of short sellers. Using a sample of expanded auditor's reports from UK-listed firms during the 2010–2017 period and hand-collecting a dataset of KAM disclosures, we find no evidence that the short interest is different for the period before than after the U.K.'s expanded auditor's report regulation. However, in our cross-sectional tests, we find that KAM disclosures have a marginal effect on short interest and a positive association between short interest and unexpected and severe KAM disclosures. We conclude that, except for severe KAM that is value-relevant to sophisticated investors, the disclosures in the expanded auditor's report have no valuation implications for short sellers. Our results are robust in examining the reactions of the financial market and analysts to KAM disclosures and addressing potential endogeneity concerns.

Suggested Citation

  • Rezaee, Zabihollah & Homayoun, Saeid, 2025. "Reprint of: Key audit matters disclosures and informed traders," The British Accounting Review, Elsevier, vol. 57(1).
    • Handle: RePEc:eee:bracre:v:57:y:2025:i:1:s0890838925000046
    DOI: 10.1016/j.bar.2025.101554
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    Keywords

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    JEL classification:

    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G20 - Financial Economics - - Financial Institutions and Services - - - General
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
    • K22 - Law and Economics - - Regulation and Business Law - - - Business and Securities Law
    • M42 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Accounting - - - Auditing

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