Penelitian ini bertujuan untuk mengetahui perkembangan Marjin laba bersih dan Pembelanjaan Modal terhadap Nilai Perusahaan baik secara parsial maupun simultan pada perusahaan sektor pertambangan yang terdaftar di Bursa Efek Indonesia periode 2012-2016. Metode penelitian yang digunakan adalah metode deskriptif dan metode verifikatif. Sedangkan data yang digunakan merupakan data sekunder yang terdiri dari Marjin Laba Bersih, Pembelanjaan Modal, dan Nilai Perusahaan. Pengambilan sempel dilakukan secara purposive sampling yaitu sebanyak 6 perusahaan dari 5 periode laporan keuangan sehingga keseluruhan sampel yang digunakan adalah 30 data. Metode pengumpulan data melalui studi kepustakaan berupa jurnal, dan data di perusahaan pertambangan, penelitian terdahulu, dan akses dari website Bursa Efek Indonesia dan Sahamok. Model analisis yang digunakan adalah analisis jalur dengan melakukan Uji Parsial (Uji-T) dam Uji Simultan (Uji-F). Hasil penelitian ini menunjukan bahwa variabel pembelanjaan modal secara parsial berpengaruh positif signifikan terhadap marjin laba bersih, variabel marjin laba bersih secara parsial berpengaruh positif tidak signifikan terhadap nilai perusahaan, variabel pembelanjaan modal secara parsial berpengaruh negatif tidak signifikan terhadap nilai perusahaan, dan secara simultan variabel marjin laba bersih dan pembelanjaan modal menunjukan hasil yang berpengaruh tidak signifikan terhadap nilai perusahaan.

The Mining Company is one of the big companies that need a lot of capital for its operations, but with a lot of capital it can increase the profit and value of the company. With the challenge of global economic conditions, one of the largest mining consumption countries, namely China, reduced its consumption, and resulted in a decline in the value of mining companies in Indonesia. From these problems this study aims to determine the development of net profit margin and capital expenditure on corporate value both partially and simultaneously in mining sector companies listed on the Indonesia Stock Exchange for the period 2012-2016. The research method used is descriptive method and verification method. While the data used is secondary data consisting of Net Profit Margin, Capital Expenditures, and Company Value. Sampling was carried out by purposive sampling as many as 6 companies from 5 financial reporting periods so that the entire sample used was 30 data. Data collection method through literature study in the form of journals, and data in mining companies, previous research, and access from the Indonesia Stock Exchange and Sahamok websites. The analysis model used is path analysis by performing Partial Test (T-Test) Simultaneous Test dam (Test-F). The results of this study indicate that the capital expenditure variable partially has a significant positive effect on net profit margin, the variable net profit margin partially has a positive and not significant effect on firm value, the capital expenditure variable partially has a significant negative effect on firm value, and simultaneously margin variable Net income and capital expenditures show results that have no significant Keywords: Net Profit Margin, Capital Expenditure, dan Firm Value

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