Market Structure and Determinants of Firm Profitability on General Insurance Industry in Indonesia

Abstract The purpose of this study is to analyze the market structure general insurance industry in Indonesia and effect share, operating expenses income (OEOI), debt ratio(DR) on profitability measured by return assets (ROA). This uses panel data regression analysis with Chow Hausman test determine best model. a combination cross-section data, which consists 11 companies, time-series five years. results showed that Indonesian 2014-2018 took form tight oligopoly high concentration level after being analyzed through four-firm ratio (CR4) Herfindahl-Hirschman Index (HHI). average CR4 84.77%, while value HHI 3,374.19. Meanwhile, based analysis, OEOI variable has significant negative firm profitability. Also, firms Indonesia. efficiency can be able increase profits rather than mastery share.