The main purpose of this paper is to disclose the properties of the equilibrium outcomes in the differentiated‐products model with two stages: (i) owner‐shareholders negotiate managerial compensation with their managers that comprises their profits and sales (sales delegation) and (ii) they engage in their market competition. The other purpose of this paper is to study the differentiated goods model in which an owner bargains the managerial compensation with her/his manager that comprises her/his profit and her/his rival's profit (relative performance delegation). We further investigate the situation wherein the firm with sales delegation and the firm with the relative performance delegation coexist. Copyright © 2012 John Wiley & Sons, Ltd.

This paper explores the capacity choice for a public firm that is a welfare-maximizer and for a private firm that is a pure-profit-maximizer in the context of a price-setting mixed duopoly with a simple mechanism of network effects where the surplus that a firm's client gets increases with the number of other clients of that firm. In this paper, we show that the public firm chooses over-capacity irrespective of the strength of network effects and the demand parameter, and that the difference between the output level and capacity level of the private firm strictly depends on the values of both the strength of network effects and the demand parameter. More precisely, the private firm chooses over-capacity when the strength of network effects is high relative to the demand parameter, while it chooses under-capacity otherwise.

In this paper, we examine how managerial delegation contracts within each firm affect the correspondence between the equilibrium ownership structure and the most socially preferred ownership structure. We consider the disclosure of managerial delegation contracts by studying the bargaining over the relative weightage of each firm's sales in a sales delegation contract between an owner and a manager under a model of endogenous merger formation in a three-firm asymmetric Cournot industry. We show that such a bargaining may reduce the requirement of an antitrust policy, since the equilibrium ownership structure can coincide with the most socially preferred ownership structure.

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