will consider the merger harmless. The purpose of this study is to examine the welfare aspects of vertical integration in a … turn out to depend on relative market shares and the degree of product differentiation. Basically, a merger is harmless … at an early stage of the screening process. Otherwise the merger may be detrimental to welfare and the competition …

We study the optimal timing of merger control by comparing the pre-and post closing enforcement. Mergers have both pro … endogenous: it depends on the timing of the merger control, as well as on some investment in evidence production. The ex post … sufficiently low, regardless of whether the fi…rms know ex ante or not their true merger type. …

-theoretic oligopoly theory, has become the dominating paradigm both in the U.S. (since the 1990s Post-Chicago movement) and in the EU (so …