Abstract
How to build a business ecosystem is an important issue for companies. Some companies integrate various values in their own groups to build value chains, while some others focus on their core values. In this research, a large-scale corporate information database is used to construct and visualize corporate networks based on corporate capital relations. Then from the viewpoints of business diversification and decentralization, we clarify the characteristics of parent companies and capital networks of major corporate groups and quantitatively analyze the relation between these characteristics and the profit of the companies. As a result, it is shown that diversification and decentralization varies depending on the corporate groups, and that diversification and decentralization contributes to the profit of the companies in certain industries such as durable goods, and not in other certain industries such as electronic computers.
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