In China’s economic system, security companies are important participants, and their high operating efficiency can improve the country’s economy. Based on the traditional CCR-DEA model, this paper uses super-efficiency DEA model and MALMQUIST index model to analyze the operational efficiency of 10 listed security companies in China from 2016 to 2020, it is found that the operating efficiency of security companies as a whole has a slight upward trend, and the improvement of business efficiency depends on technical efficiency, and relates to pure technical efficiency and scale efficiency.
Since 2013, China’s Internet money fund market has entered a new era. On June 17, 2013, Yu’e Bao, jointly launched by Alipay and Tianhong Fund Company, was the first to go public. In just a few short years, the Internet money fund market has developed in full swing, and Tencent, Baidu, and JD have also participated in the development of related change wealth management businesses. This article uses super-efficiency DEA to evaluate fund performance. Through the validity test of 16 sample fund products in 2019, 7 sample funds are valid according to the DEA; and 16 sample fund products in 2020 are tested for validity, 9 sample funds are valid according to the DEA. The research found that most of the Internet financial products have not yet reached their effectiveness, which is mainly reflected in the fund’s custody and management fees. There is still a lot of room for development in China’s Internet fund market.
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