产权结构、存款保险与银行竞争——基于Bertrand模型的研究

本文通过比较双头寡占下价格竞争的纯粹寡占模型和混合寡占模型,主要讨论了国有商业银行对存款保险制度的建立是否存在影响,以及不同存款保险制度对国有商业银行经营利润的影响。研究发现:(1)外部风险控制不能完全代替银行内部风险控制。(2)风险调整存款保险制度与固定费率存款保险制度相比,会弱化道德风险,但无法完全避免。(3)当国有商业银行完全追求社会福利最大化时,无论采取固定费率存款保险制度还是风险调整存款保险制度,均不影响国有商业银行的利润。(4)当银行贷款利率和存款保险定价合理时,如果不考虑信息不对称和代理问题,产权结构不影响银行的风险选择。

The Structure of Property Right,Deposit Insurance System and Competition among Banks:A Study Based on Bertrand Models

This paper established a Bertrand duopoly model and a Bertrand mixed oligopoly model to analyze how the structure of property right and the deposit insurance system work on the competition among banks.There are four findings.First,deposit insurance system cannot replace the internal risk control of the bank.Second,comparing with the fixed insurance system,risk-related insurance system can weaken the bank's moral hazard,but it cannot eliminate the moral hazard.Third,the sensitivity of probability of success ...