Welfare effects of common ownership in an international duopoly
构建了一个存在全球共同所有权的国际寡头模型，研究共同所有权如何影响寡头市场的国际贸易量和全球福利。发现当国际运输成本低（高）时，福利随共同所有权程度增加而减少（增加），而共同所有权总是减少国际贸易。
Abstract We formulate an international oligopoly model in the presence of global common ownership. We theoretically investigate how common ownership affects the volume of international trade in an oligopoly market and global welfare. We find that welfare decreases (increases) with the degree of common ownership when the international transport costs are low (high), whereas common ownership reduces international trade. This conclusion remains valid in the presence of import tariffs and asymmetric common ownership share.