“…The synergy created by related mergers, therefore, 'is likely to affect the individual earnings streams, which in turn non-trivially affect the determination of beta' (Michel and Shaked, 1984: 18). First, related mergers provide opportunities to reduce cost and/or enhance differentiation through exploiting scale and scope economies in such tangible areas as manufacturing, research, and distribution (Salter and Weinhold, 1979;Lubatkin, 1983), and in such intangible areas as administrative 'know-how' (Bettis and Hall, 1982;Porter, 1985) and brand extension (Singh and Montgomery, 1987). Second, related mergers provide the potential for collusive gains (monopoly power) if by becoming larger, the merged firm can influence the price of its output or the cost of its inputs (Chatterjee, 1986).…”