Stock Market Reaction to Mergers and Acquisitions Announcements in Emerging Markets. Evidence from Mergers and Acquisitions Firms Listed in Eastern Africa Securities Markets

Abstract

Stock market reaction to mergers and acquisitions announcements is a topical issue in corporate finance. Consequently, the topic has received attention in equal measure; however, the bulk of these studies are skewed towards the developed financial markets. The foregoing evidence raises a fundamental question; is the empirical evidence exhibited in developed financial markets applicable in the emerging markets? Using data from listed firms in Eastern Africa securities market involved in mergers and acquisitions for the period 1996- 2015, we computed cumulative abnormal returns for different holding period. Parametric t test was used to test the significance of the abnormal returns. Our findings revealed that acquirer firm shareholders earned a significant positive cumulative abnormal return during the entire event window that is [-20, +20].  On the other hand, cumulative average abnormal return findings revealed that acquiring firms earned positive return immediately after the acquisition announcement. However, the positive performance was short lived, four days after M&A announcement returns declined sharply.

Keywords: Mergers and acquisition, cumulative abnormal return and Cumulative average abnormal return.