The type of research used in this study is quantitative research to
determine the effect of profitability, ownership structure, firm size on firm
performance with capital structure as intervening variable. The independent
variables in this research are profitability, ownership structure, and firm size,
while the dependent variable in this research is firm performance, and capital
structure as intervening variable. The object of this study using a manufacturing
company listed on the Indonesia Stock Exchange. The data used are secondary
data of annual financial statements for the period 2014-2016. The collection
technique used purposive sampling while the data analysis techniques used in this
study are descriptive statistics, classical assumption test, multiple regression
analysis and hypothesis testing. The result of analysis shows that profitability and
ownership structure have negative effect to capital structure. Firm size has a
positive effect on capital structure. Profitability, ownership structure, firm size
and capital structure have a positive effect on firm performance. The capital
structure is able to mediate the effect of profitability, ownership structure, and
firm size on firm performance