TOTM

Market Definition and Margins in the New Guidelines

I’m still working through the 2010 Horizontal Merger Guidelines, and like Dan, I find myself puzzling over some of the revisions, and in favor of others.  I wanted to start with some first impressions.  The big movement here, is that the new HMGs repudiate the market definition requirement in the new Section 4 and in Section 6 on Unilateral Effects.  Consider the language in Section 4 on market definition…

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