ANALISIS PENGARUH EFISIENSI MODAL KERJA, LIKUIDITAS DAN LEVERAGE TERHADAP PROFITABILITAS PADA PERUSAHAAN PERTAMBANGAN YANG TERDAFTAR DI BURSA EFEK INDONESIA

This study aims to find out that the working capital, liquidity and leverage effect on profitability (Return on Equity) company. The sample in this study uses only 16 companies from 2009-2011. Data collected secondary data melelui observation method. variable efficiency of working capital, liquidity, and leverage significant effect on return on equity (ROE). While the simultaneous test (F test the efficiency of working capital, liquidity, and leverage has no effect on ROE mining companies listed on the Stock Exchange. Amount of R2 on mining companies in Indonesia amounted to 0.329. This shows the influence of the independent effect of the efficiency of working capital, liquidity, and leverage on ROE is the dependent variable explained by the model of this equation was 32.9% while the rest is influenced by factors other than research. From research conducted mining researchers listed on the Stock Exchange, in order to increase profitability (ROE) As efficiently as possible. As for further research should add a variable, extending the study period or so more in the know variables that affect the profitability of the mining companies in Indonesia. Keywords: Efficiency of Working Capital, Liquidity, Leverage, Profitabilit