

There is also an increased potential for tying, bundling or analogous practices that could restrict buyer choice but also lower prices. When complementary products are merged, there is a potential for considerable synergies that could benefit buyers. In the context of conglomerate merger review, portfolio effects seem to refer to the pro- and anti-competitive effects possibly arising when: the parties enjoy market power but not necessarily dominance and the products joined are complementary or have analogous properties.

This document (of 295 pages) comprises the proceedings of an OECD roundtable on portfolio effects in conglomerate mergers, that was held at the OECD in October 2001.
