Criticism of the short-term event analysis method in evaluating the effectiveness of mergers and acquisitions

The article presents the analysis of the contemporary theoretical and empirical research devoted to evaluation of the effectiveness of mergers and acquisitions by means of short-term event analysis method, managers’ motivation in making decisions on the acquisition of other companies from the perspective of the timing of the expected effect; it adduces and systematizes the limitations of the cumulative abnormal returns (or CARs) method. The authors carry out scientific synthesis of the limitations of the method of capabilities of accurate prediction of the final results of transactions. In particular, the following problems of the CARs method have been identified: determining the date of the event, determining the event window, inconsistencies in research results, outflow of funds from purchasing companies during mergers and acquisitions, arbitrage trading strategies, the lack of long-term predictive value of the method of accumulated excessive profitability, efficient market hypotheses, overcharging of the purchasing company shares.

The authors have made a conclusion about possible inaccuracy of the method if used to evaluate the effectiveness of mergers and acquisitions.

1. Hevink S. Market efficiency and cumulative abnormal returns in M&A. Radboud Universiteid. 19.08.2021. Available at: https://theses.ubn.ru.nl/items/dc944d9b-891c-44f3-9cfd-349f817ece8c

2. Renneboog L., Vansteenkiste C. Failure and success in mergers and acquisitions. CentER Discussion Paper Series. № 2019-026. August, 2018. https://doi.org/10.2139/ssrn.3434256

3. Koller T., Goedhart M., Wessels D. Valuation: measuring and managing the value of companies. Hoboken, N.J.: John Wiley & Sons, Inc.; 2010. 811 р.

4. Klein T. Event studies in merger analysis: Review and an application Using U.S. TNIC Data. Tinbergen Institute Discussion Paper. TI 2020-005/VII. Amsterdam and Rotterdam: Tinbergen Institute; March 2020. 31 p. Available at: https://papers.tinbergen.nl/20005.pdf

5. Dhillon U.S., Raman, K., Ramirez G.G. Analysts’ Dividend forecasts and dividend signaling. SSRN Electronic Journal. June 2003:34. https://doi.org/10.2139/ssrn.420782

6. Pogozheva A. Event study analysis application for testing of the information value of analyst recommendations on Russian public companies. Journal of Corporate Finance Research. 2013;7(2(26)):35–49. (In Russ.). https://doi.org/10.17323/j.jcfr.2073-0438.7.2.2013.35-49

7. Ball R., Brown P. An empirical evaluation of accounting income numbers. Journal of Accounting Research. 1968;6(2):159–178. https://doi.org/10.2307/2490232

8. Fama E.F., Fisher L., Jensen M.C., Roll R.W. The adjustment of stock prices to new information. SSRN Electronic Journal. 2003:28. https://doi.org/10.2139/ssrn.321524

9. Kothari S.P., Warner J.B. The econometrics of event studies. SSRN Electronic Journal. 2004:51. http://dx.doi.org/10.2139/ssrn.608601

10. Fisch J.E., Gelbach J.B., Klick J. The logic and limits of event studies in securities fraud litigation. Texas Law Review. 2018;96:553–621.

11. Stillman R. Examining antitrust policy towards horizontal mergers. Journal of Financial Economics. 1983;11(1-4):225–240. https://doi.org/10.1016/0304-405x(83)90012-0

12. Grigor’eva S.A., Grinchenko A.Yu. Impact of mergers and acquisitions in financial sector on bidder’s returns in emerging capital markets. Journal of Corporate Finance Research. 2013;(4(28)):53–71. (In Russ.). https://doi.org/10.17323/J.JCFR.2073- 0438.7.4.2013.53-71

13. Duso T., Gugler K., Yurtoglu B.B. Is the event study methodology useful for merger analysis: A comparison of stock market and accounting data. International Review of Law and Economics. 2010;30(2):186–192. https://doi.org/10.1016/j.irle.2010.02.001

14. Mukherjee T.K., Kiymaz H., Baker H.K. Merger motives and target valuation: A survey of evidence from Cfos. Journal of Applied Finance. Winter 2004:7–24. Available at: https://ssrn.com/abstract=670383

15. Tunyi A.A. Revisiting acquirer returns: Evidence from unanticipated deals. Journal of Corporate Finance. 2020;66(1):101789. https://doi.org/10.1016/j.jcorpfin.2020.101789 1

16. Ţiţan A.G. The efficient market hypothesis: Review of specialized literature and empirical research. Procedia Economics and Finance. 2015;32:442–449. https://doi.org/10.1016/s2212-5671(15)01416-1

17. Skvortsova I., Ignatiev E., Stelmakhova E., Proskurin S., Kryhtin V. Event study methodology in M&A research: evidence from developed and emerging capital markets. Journal of Corporate Finance Research. 2014;7(4):111–125. (In Russ.). https://doi.org/10.17323/j.jcfr.2073-0438.7.4.2013.111-125

18. Kardash A.P. Creating value in mergers and acquisitions. Vestnik VGU. Seriya: Ekonomika i upravlenie = Proceedings of Voronezh State University Series: Economics and Management. 2013;(2):142–144. (In Russ.)

19. Andrade G.M.-M., Mitchell M.L., Stafford E. New evidence and perspectives on mergers. Harvard Business School Working Paper No. 01-070. May 2001; 32 p. https://doi.org/10.2139/ssrn.269313

20. Mitchell M., Pulvino T., Stafford E. Price pressure around mergers. The Journal of Finance. 2004;59(1):31–63. https://doi.org/10.2139/ssrn.318539

21. KPMG. Unlocking shareholder value: The keys to success, mergers and acquisitions. Mergers & Acquisitions. Global research report 1999. 22 p. Available at: https://imaa-institute.org/docs/m&a/kpmg_01_Unlocking-Shareholder-Value-The-Keysto-Success.pdf

22. Sirower M., Sahni S. Avoiding the “Synergy trap”: practical guidance on M&A decisions for CEOs and boards. Journal of Applied Corporate Finance. 2006;18(3):83–95. https://doi.org/10.1111/j.1745-6622.2006.00101.x

23. Kwoka J., Gu C. Predicting merger outcomes: The accuracy of stock market event studies, market structure characteristics, and agency decisions. The Journal of Law and Economics. 2015;58(3):519–543. https://doi.org/10.1086/684225

24. Броневич А.Г., Косюк Е.Д., Лепский А.Е., Пеникас Г.И. Исследование конфликтности и детерминант точности прогнозов в рекомендациях российских финансовых аналитиков. Препринт WP7/2015/10. Серия WP7. М.: Изд. дом. Высшей школы экономики; 2015. 32 с.

25. Abdullin A.R., Farrakhetdinova A.R. The market efficiency hypothesis in the light of finance theory. Upravlenie ekonomicheskimi sistemami. 2015;(4(76)):1–23. (In Russ.)

26. Voronina N.V., Babanin V.A., Veselova A.V. Theoretical aspects of mergers and acquisitions in modern conditions. Daidzhest-finansy = Digest Finance. 2006;(5(137)):13–21. (In Russ.)