Theoretical considerations and observational data support the idea that mergers were more frequent in the past. At high redshifts, violent interactions and mergers may be implicated in the origin of Lyman-break galaxies, sub-mm starbursts, and active galactic nuclei. Most stars in cluster ellipticals probably formed at redshifts z > 2, as did most of the halo and globular clusters of the Milky ...

Recent years have seen a sharp increase in the number of healthcare providers employed by health systems. The implications of this trend are poorly understood and controversial. To shed light on the phenomenon, we exploit rich data from the Centers for Medicare and Medicaid Services in conjunction with a set of mergers that financially integrated one or more hospitals with formerly independent ...

As in previous decades, merger activity clusters by industry during the 1990s. One particular kind of industry shock, deregulation, becomes a dominant factor, accounting for nearly half of the merger activity since the late 1980s. In contrast to the 1980s, mergers in the 1990s are mostly stock swaps, and hostile takeovers virtually disappear. Over our 1973 to 1998 sample period, the announcemen...

Compensation of bank CEOs increases after mergers, suggesting that executives may engage in acquisitions to enjoy size-related personal benefits (Bliss and Rosen, 2001). Alternatively, bank mergers can be viewed as the efficient assignation of merged assets to the managerial team best suited to realize merger gains. Theories of executive compensation based on managerial productivity and optimal...

Cell mergers have long been believed to play a role in tornado production, although the exact mechanisms are poorly understood. Several studies have noted the resultant thunderstorm intensification that occurs during a cell merger event (e.g., Cunning et al. 1982, Westcott and Kennedy 1989). Numerical simulations (e.g., Tao and Simpson 1989, Kogan and Shapiro 1996, Bluestein and Weisman 2000) h...

The last twenty years of the twentieth century witnessed regulatory change not seen since the Great Depression. That regulatory change, culminating with the Interstate Banking and Branching Efficiency Act of 1994, produced a significant consolidation within the banking industry, resulting from mergers and failures, that accelerated near the end of the century. Unlike the mergers and failures, t...

During the last decade, Nigeria has witnessed significant growth in corporate mergers and acquisitions. Reasons behind mergers and acquisitions are to syntheses and enhance the corporate tenacity (synergy). In the existing study, an attempt has been on the study of the impact of mergers and acquisitions on the shareholders wealth. The study specifically on companies which have undergone merger ...

In this paper, I review the literature on the motivations for corporate mergers and acquisitions. I first introduce the main definitions and some relevant empirical studies in the field. Secondly, I study the historical evolution of the mergers and acquisition activity in the United States, explaining the environment in which they took place. I then explain the theoretical motivations for merge...

Nuclear activity in galaxies is closely connected to galactic mergers and supermassive black holes (SBH). Galactic mergers perturb substantially the dynamics of gas and stellar population in the merging galaxies, and they are expected to lead to formation of supermassive binary black holes (BBH) in the center of mass of the galaxies merged. A scheme is proposed here that connects the peak magni...