The intra business group effects of alliance network extensions

Purpose – The purpose of this paper is to better understand the influence of business group membership by exploring how actions by a member firm influence other firms in the business group. Specifically, the authors ask two questions in this study: when a member firm forms strategic alliances with partners outside of the business group, how does the alliance influence other members in the business group? Moreover, which types of member firms are more affected than others? Design/methodology/approach – The authors employ standard event-study methodology to examine the stock price responses for the focal and member firms on the announcement of an alliance. Moreover, the authors employ the cross-sectional regression analyses to test hypotheses concerning the impact of alliance, group, and firm characteristics on the cumulative abnormal returns of non-announcing members. All regressions are estimated using ordinary least squares. Findings – The results show that, on average, alliance-announcing member firms e...