An Examination of the Long Run Performance of UK Acquiring Firms

This study examines a comprehensive data set of large domestic takeovers by UK listed companies between 1984 and 1992. The contribution of this paper is to show, by using a series of models of abnormal returns, together with the Ibbotson (1975) 'Returns Across Time Series' model and a simple cross-sectional model of returns across all listed UK companies, that the average abnormal return for up to two years post-acquisition is unambiguously and significantly negative. In particular, acquirers financing a takeover through equity, and single (as opposed to regular) acquirers exhibit significant negative performance. There is also some evidence to suggest that diversifying acquirers perform worse than non-diversifying acquirers and that recommended bids are associated with poorer subsequent under-performance by acquirers than are hostile bids.