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The impact of insider ownership and institutional ownership on post-earnings-announcement-drift: Evidence from Vietnam

Author

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  • Ho, Tuan Q.
  • Nguyen, Y.
  • Tran, Hieu

Abstract

In this study, we first document the existence of post-earnings-announcement-drift (PEAD) in Vietnam, consistent with investors’ under-reaction to earnings surprises. We then investigate whether and how institutional ownership and insider ownership affect PEAD. We find that the magnitude of PEAD effect is stronger among firms with higher insider ownership. We argue that higher insider ownership may increase information opacity and impede efficient processing of earnings news among investors. We provide supporting empirical evidence for this argument. Furthermore, in contrast to the conventional view that institutional investors exploit PEAD and accelerate the speed of price discovery, we find that institutional investors do not have significant impacts on PEAD. We argue that this result is consistent with recent findings in the US and China that some institutional investors may herd, hence, not necessarily help to mitigate PEAD. Our findings provide useful insights about the effect of insider investors and institutional investors on the delayed response to earnings news in the context of Vietnam.

Suggested Citation

  • Ho, Tuan Q. & Nguyen, Y. & Tran, Hieu, 2024. "The impact of insider ownership and institutional ownership on post-earnings-announcement-drift: Evidence from Vietnam," Research in International Business and Finance, Elsevier, vol. 70(PB).
    • Handle: RePEc:eee:riibaf:v:70:y:2024:i:pb:s0275531924001454
    DOI: 10.1016/j.ribaf.2024.102352
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    Keywords

    Post earnings announcement drift; Institutional ownership; Insider ownership; Under-reaction; Earnings news;
    All these keywords.

    JEL classification:

    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G20 - Financial Economics - - Financial Institutions and Services - - - General
    • M41 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Accounting - - - Accounting

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