The Gray Factor Analysis of Listed Companies Performance:Take Chinese Ashare Market Information Technology Industry as an Example

With the constant development of China's securities market,the performance of listed companies has become the focus of securities investors,government regulators,securities analysts,fund managers and other stakeholders.How to scientifically and rationally evaluate the performance of listed companies has become the important issues of portfolio theory and practice.This paper introduces multivariate statistical analysis and gray relational analysis method in performance evaluation of listed companies,and transforms the traditional performance evaluation methods,trying to build a more scientific and effective performance evaluation model,at the same time,research empirically taking the listed companies of information technology industry as the samples.