In Effects of Merger and Acquisition in Companies, the authors address some of the most critical consequences of M&A in Listed and Non Listed Companies in Sweden. Research findings on the consequences of post-M&A performance have generated several results, although most of which are inconsistent. This book pursues multiple measures of performance in post-M&A research, and it also analyses and evaluates existing performance indicators that have been employed in other literatures with focus on the Swedish market for listed and non listed companies.