F.A.Q. at International Financial Securities Regulatory Commission

In general, acquisitions can be horizontal, vertical, or conglomerate. A horizontal acquisition takes place between two firms in the same line of business. For example, one tool and die company might purchase another. In contrast, a vertical merger entails expanding forward or backward in the chain of distribution, toward the source of raw materials or toward the ultimate consumer. For example, an auto parts manufacturer might purchase a retail auto parts store. A conglomerate is formed through the combination of unrelated businesses.