《保险研究》20191005-《财险公司业务集中度对再保险需求的非线性影响研究》（高天一、丁宇刚）

［摘   要］保险公司的业务集中度会影响公司专业服务可得性和风险水平,从而对保险公司再保险需求产生非线性影响。本文以2002~2017年我国财险公司的非平衡面板数据,运用固定效应面板模型,实证检验我国财险公司业务集中度对再保险需求的影响。研究结果表明,业务线集中度对再保险需求没有显著影响；业务区域集中度对再保险需求存在显著正向影响；业务区域集中度与再保险需求存在倒U型关系。再保险需求在业务区域集中度为62%~70%左右时取到极大值,当小于该值时,再保险需求随业务区域集中度的增加而增加,当大于该值时,业务区域集中度的增加会减少再保险需求。本文的结论对保险公司制定合理分保策略、提高风险管理水平具有重要意义。

［关键词］财险公司；再保险需求；业务集中度；非线性关系；倒U型

［作者简介］高天一,中央财经大学保险学院硕士研究生,研究方向:保险经济学；丁宇刚,北京大学经济学院博士研究生,研究方向:社会保险和保险经济学,E-mail：cufe_dyg@126.com。

A Research on Nonlinear Impacts of Business Concentration on Reinsurance Demands of P&C Insurance Companies

GAO Tian-yi,DING Yu-gang

Abstract：The business concentration of an insurance company will affect its professional service availability and risk level,which will have a nonlinear impact on the reinsurance demand.Based on the unbalanced panel data of China's P&C insurance companies from 2002 to 2017,this paper used the fixed-effect panel model to empirically test the impact of the business concentration of China's P&C insurance companies on their demands for reinsurance.The empirical results show that the business line concentration has no significant impact on the reinsurance demand;business geographic concentration has a significant positive impact on the reinsurance demand;there is an inverse U-shaped relationship between the business geographic concentration and the reinsurance demand.The reinsurance demand reaches the maximum value when the business geographic concentration is about 62%-70%.When the business geographic concentration is less than 70%,the reinsurance demand increases with the increase of the former;when the business geographic concentration is greater than the value,the increase of the former will reduce the reinsurance demand.The conclusions of this paper are of great significance for insurance companies to formulate reasonable reinsurance strategies and improve risk management.

Key words：P&C insurance companies;reinsurance demand;business concentration;the nonlinear relationship;inverse U-shape