The effect of merger and acquisition announcement on Greek bank stock returns
This study examines the response of Greek bank stock prices to the announcement of intended mergers and acquisitions (M&As) during the period 1998-1999, applying a standard event study methodology. The results show that both the acquiring banks and, albeit to a lesser extent, the target banks experience significant positive abnormal stock returns that last for a few days around the announcement date. These returns are more evident in the period before the announcement thus indicating either that rumours circulate or that inside information is being abused. The efficient market hypothesis in its semi-strong form seems to be violated for the period under examination, as abnormal returns remain evident for several days after the announcement date.
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- van Praag, Bernard M. S., 1991. "Ordinal and cardinal utility : An integration of the two dimensions of the welfare concept," Journal of Econometrics, Elsevier, vol. 50(1-2), pages 69-89, October.
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- Dimitrios Sideris, 2004. "Testing for Long-Run PPP in a System Context: Evidence for the US, Germany and Japan," Working Papers 19, Bank of Greece.
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