自公司股份能够交易以来,为各种目的收购上市公司的行为就一直存在和发展着。以消除竞争、扩大市场份额、形成规模效益为目的的称为横向收购,即发生于同行业竞争对手之间的收购;以加速生产流程、缩短生产周期、提升综合利润为目的的行为为纵向收购,即发生于上下游企业之间的收购;以实现多元化经营、通过投资进入其他行业和地域为目的的称为混合收购。对跨国大企业来讲,横向收购受到反垄断法等的限制,而纵向收购则一般限于制造企业,所以,跨国大企业比较常用的是混合收购。目前很多跨国公司已经失去开发技术和培育新兴市场的耐心,往往通过收购掌握核心技术 Since the company shares can be traded, the behavior of the acquisition of listed companies for various purposes has been there and development. To eliminate competition, expand market share, the formation of economies of scale for the purpose of the so-called horizontal acquisition, which occurs in the same industry between the acquisition of competitors; to speed up the production process, shorten the production cycle, improve overall profitability for the purpose of the vertical acquisition , Which takes place between the upstream and downstream acquisitions; to achieve diversification, through investment into other industries and territories for the purpose of the so-called hybrid acquisition. For multinational corporations, horizontal mergers and acquisitions are subject to antitrust laws. Vertical mergers and acquisitions are generally limited to manufacturing enterprises. Therefore, multinational mergers and acquisitions (M & A) are the more commonly used multinational corporations. At present, many multinational corporations have lost their patience to develop technologies and nurture emerging markets. They often acquire core technologies through acquisitions