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Evaluation of the event study in the case of mergers and acquisitions

Author

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  • Dragoș-George BÎLTEANU

    (Bucharest University of Economic Studies, Romania)

  • Irina STANCU

    (University of Geneva, Switzerland)

Abstract

The subject under analysis pertains to the research field of semi-strong informational efficiency, which is established when the autocorrelation coefficient of stock prices during the event period being analyzed is zero. This indicates that stock price fluctuations before and after the mergers and acquisitions (M&A) event occur randomly. If the release of new information regarding mergers and acquisitions is followed by abnormal returns before or after the M&A event, then semistrong efficiency is not confirmed. There is a notable movement in stock prices one day prior to the official announcement of mergers and acquisitions, followed by a significant reverse movement for several subsequent days. This fluctuation in returns, along with market movements, exceeds 11% over a 10-day period. The day of the event is considered to be the day when the Board of Directors' decision regarding the acquisition is made public. Firstly, we highlighted the purpose of the event study, namely, to identify the „residuals” of returns between actual returns (R_it) and expected returns during the period when M&A information was publicly disseminated. Furthermore, we reviewed elements of the literature that addressed event studies in general, with a focus on the impact of M&A on the capital market in particular. Subsequently, we outlined the research methodology and hypotheses, and the models used to identify return residuals. For analyzing the impact of M&A on market reactions, we used the market model and the Capital Asset Pricing Model (CAPM). Our empirical study estimates the impact on the stock price of Transilvania Bank resulting from the acquisitions of Volksbank Romania and Bancpost. Finally, we analyzed the impact of the merger between the Bucharest Stock Exchange (BVB) and SIBEX Sibiu. This paper offers a thorough empirical analysis of the economic advantages received by shareholders of acquiring companies after mergers and acquisitions. Our research findings show that, in general, acquiring firms yield positive abnormal returns. This stands in contrast to much of the existing literature, which indicates that, on average, there are losses (although not always statistically significant) associated with merger and acquisition transactions in developed countries.

Suggested Citation

  • Dragoș-George BÎLTEANU & Irina STANCU, 2024. "Evaluation of the event study in the case of mergers and acquisitions," Theoretical and Applied Economics, Asociatia Generala a Economistilor din Romania / Editura Economica, vol. 0(1(638), S), pages 295-312, Spring.
    • Handle: RePEc:agr:journl:v:1(638):y:2024:i:1(638):p:295-312
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    References listed on IDEAS

    as
    1. Hitt, Michael A. & King, David & Krishnan, Hema & Makri, Marianna & Schijven, Mario & Shimizu, Katsuhiko & Zhu, Hong, 2009. "Mergers and acquisitions: Overcoming pitfalls, building synergy, and creating value," Business Horizons, Elsevier, vol. 52(6), pages 523-529, November.
    2. Cristian Ianca, 2008. "Tax Implication of Structuring and Financing Mergers and Acquisitions," Theoretical and Applied Economics, Asociatia Generala a Economistilor din Romania / Editura Economica, vol. 9(9(526)), pages 69-78, September.
    3. Taher Hamza & Faten Lakhal, 2010. "The determinants of earnings management by the acquirer: The case of french corporate takeovers," Working Papers 2010-3, Laboratoire Orléanais de Gestion - université d'Orléans.
    4. repec:cmj:journl:y:2013:i:27:hromeias is not listed on IDEAS
    5. Tomi Laamanen, 2007. "On the role of acquisition premium in acquisition research," Strategic Management Journal, Wiley Blackwell, vol. 28(13), pages 1359-1369, December.
    6. Ali, Ashiq & Klasa, Sandy & Zhen Li, Oliver, 2008. "Institutional stakeholdings and better-informed traders at earnings announcements," Journal of Accounting and Economics, Elsevier, vol. 46(1), pages 47-61, September.
    7. Brown, Stephen J. & Weinstein, Mark I., 1985. "Derived factors in event studies," Journal of Financial Economics, Elsevier, vol. 14(3), pages 491-495, September.
    8. Lev, B & Zarowin, P, 1999. "The boundaries of financial reporting and how to extend them," Journal of Accounting Research, Wiley Blackwell, vol. 37(2), pages 353-385.
    9. Anca-Simona HROMEI, 2013. "Reasons For Mergers And Their Impact On Companies," SEA - Practical Application of Science, Romanian Foundation for Business Intelligence, Editorial Department, issue 1, pages 82-88, June.
    10. Marina UHER & Cristina Mihaela NAGY & Bogdan COTLET & Dumitru COTLET, 2012. "Merger of commercial companiesin the conditions of the financial crisis," Anale. Seria Stiinte Economice. Timisoara, Faculty of Economics, Tibiscus University in Timisoara, vol. 0, pages 416-419, May.
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