Purpose – The purpose of this paper is to demonstrate with real data the enhanced statistical power of a GLS-based event study methodology that requires the same input data as the traditional tests. Design/methodology/approach – The paper uses full sample, subsample and simulated modified...

Purpose – The purpose of this paper is to demonstrate with real data the enhanced statistical power of a GLS‐based event study methodology that requires the same input data as the traditional tests. Design/methodology/approach – The paper uses full sample, subsample and simulated modified...

Winners of the Brazilian privatization auctions (BPAs) earned, on average, a 0.7 percent abnormal return on the days of the auctions. This translates into 13 percent underpricing. In contrast, using results from the literature as a reference, seasoned share issue privatizations register less...

A structural event study methodology accounts for the interaction of two M&A effects: synergy (total value) and dominance (bargaining power). This interaction jointly (simultaneously) determines the parties' abnormal returns. An application in the context of corporate governance illustrates our...