台灣產險業汽車再保險市場資訊不對稱之研究：金融控股公司隸屬與車險保費成長率的調節角色探討

An Investigation into Information asymmetry in Taiwan's Property and Casualty Automobile Reinsurance Market: Exploring the Moderating Role of Financial Holding Company Affiliation and Growth Rate of Automobile Premium

本研究利用2011年至2021年的台灣產險業汽車保險再保險資料，透過利用若干母數迴歸模型，檢定汽車保險損失率與汽車保險再保險之間是否存在相關性的方式，探討汽車保險再保險市場是否存在資訊不對稱現象。實證結果顯示，台灣汽車保險再保險市場確實存在資訊不對稱現象。此外，實證結果亦顯示，金融控股公司隸屬與汽車保險保費成長率皆減緩資訊不對稱現象。

The objective of this research is to explore the potential information asymmetry in the Taiwanese automobile reinsurance market, using data from 2011 to 2021 in the property and casualty automobile insurance industry. The relationship between automobile insurance loss ratios and automobile reinsurance is analyzed through the application of various parametric regression models. The empirical results provide evidence supporting the presence of information asymmetry in Taiwan's automobile reinsurance market. Additionally, the findings suggest that financial holding company affiliation and the growth rate of automobile insurance premiums contribute to the reduction of information asymmetry.