This book highlights research-based case studies in order to analyze the wealth created in the world’s largest mergers and acquisitions (M&A). This book encourages cross fertilization in theory building and applied research by examining the links between M&A and wealth creation. Each chapter covers a specific case and offers a focused clinical examination of the entire lifecycle of M&A for each mega deal, exploring all aspects of the process. The success of M&A are analyzed through two main research approaches: event studies and financial performance analyses. The event studies examine the abnormal returns to the shareholders in the period surrounding the merger announcement. The financial performance studies examine the reported financial results of acquirers before and after the acquisition to see whether financial performance has improved after merger. The relation between method of payment, premium paid and stock returns are examined. The chapters also discuss synergies of the deal-cost and revenue synergies.