股份制改造提升了中国银行体系中介效率吗?——基于NIM的经验证据

Does Joint-stock System Reform Enhance Intermediate Efficiency of Chinese Banking System?——Based on NIM Experimental Evidences

以NIM作为中国银行体系中介效率的衡量指标,选取27家代表性商业银行数据,实证检验股份制改造是否提升中国银行体系中介效率及其内在作用机制。结果表明,股份制改造是提升中国银行体系中介效率的有效手段,并且股份制改造的深度与银行体系中介效率提升正相关;股份制改造提升中国银行体系中介效率的内在机制在于,股份制改造降低了银行营运成本和隐含利息支付、提高了管理质量;同时上市银行和非上市银行中介效率分化源于二者之间NIM中非纯利差的影响因素存在差异。

Using NIM as the measure indictor of the intermediate efficiency of Chinese banking system,this paper conducted an empirical study on whether Joint-stock system reform could enhance the intermediate efficiency of Chinese bank system and its inherent mechanism with 27 representative commercial banks data.The conclusions are as follows：Joint-stock system reform is an effective means of enhancing the intermediate efficiency of Chinese banking system,whose level is positively correlated with the enhancement of the intermediate efficiency.The reason why the Joint-stock system reform improves the intermediate efficiency of Chinese bank system is that it reduces bank＇s operating costs and implicit interest payments,and increases the quality of management.Meanwhile the differentiation between listed banks and unlisted banks came from the difference of the NIM＇s un-pure spread influencing factors.