我国AB股双重上市公司经营业绩变化的实证分析  

An empirical study on operating performance of dually-listed firms in China

作　　者：王凯涛[1] 孙开连[1] 陈金贤[1] 

机构地区：[1]西安交通大学管理学院国际经济研究所,陕西西安710049

出　　处：《数理统计与管理》2004年第2期28-34,共7页Journal of Applied Statistics and Management

基　　金：国家社科基金资助项目 (0 1BJL0 89)

摘　　要：本文以46家在上海和深圳同时上市AB股的公司的样本,分析了公司实行双重上市前1年及其后4年的经营业绩的变化趋势以及股权结构和上市顺序对它的影响。研究表明,双重上市当年及其后4年经营业绩显著下降;股权结构和上市顺序对公司经营业绩影响明显。最后,文章提出了改善AB股公司经营业绩的对策建议。This article investigates the change in operating performance of firms after they conducting dually-listing,and the relationship between it and the ownership structure and the impact of listing schedule on it .The sample contains 46 firms offering both A and B shares in Shanghai or Shenzhen exchange.A significant decline in operating performance subsequent to the dually-listing is found. And both the ownership stucture and listing schedule impact the firms' operating performance.At the end ,the authors put forward some suggestions to enhance their operating performance.

关 键 词：上市公司 经营业绩 实证分析 中国 股权结构 股票市场 双重上市 Wilcoxon符合秩检验 

分 类 号：F275[经济管理—企业管理] O212[经济管理—国民经济]