Penelitian ini menguji signifikansi pengaruh Debt to Equity Ratio, Operation Leverage, dan Firm Size terhadap Imbal Hasil (return) saham yang diperdagangkan Perusahaan Non Keuangan di Bursa Efek Indonesia selama kurun waktu tahun 2009 - 2013. Analisis data menggunakan metode Ordinary Least Square (OLS), dan mendapatkan kesimpulan bahwa variabel Debt to Equity Ratio, Operation Leverage, dan Firm Size secara bersama-sama tidak mampu menjelaskan dan tidak memiliki pengaruh yang signifikan terhadap variasi imbal hasil (return) saham. Selain itu, ditemukan bahwa Firm Size secara individual memiliki pengaruh signifikan terhadap imbal hasil (return) saham untuk sektor Industri Dasar dan Kimia, Industri Barang Konsumsi, Infrastruktur, Utilitas dan Transportasi, Aneka Industri, serta Perdagangan dan Jasa. Debt to Equity Ratio (DER) secara individual memiliki pengaruh signifikan terhadap imbal hasil (return) saham untuk sektor Industri Dasar dan Kimia, Industri Barang Konsumsi, serta Aneka Industri. Operation Leverage (DOL) secara individual memiliki pengaruh signifikan terhadap imbal hasil (return) saham untuk sektor Industri Dasar dan Kimia, Industri Barang Konsumsi, Infrastruktur, Utilitas dan Transportasi, serta Aneka Industri.

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Research conducted to test the significance of the influence of the Debt to Equity Ratio, Operation Leverage, and Firm Size against the yield (return) shares traded on Non Financial Companies in Indonesia stock exchange during the period 2009 - 2013. Data analysis method using the Ordinary Least Square (OLS), and get the conclusion that the variable Debt to Equity Ratio, Operation Leverage, and Firm Size together was not able to explain and does not have significant influence towards variations of yield (return) shares of the company traded on the non financial IDX during the years 2009-2013. However, it was found that Firm Size variable have a significant influence on an individual basis against the yield (return) shares for Basic Industry and Chemicals, Consumer Goods Industry, Infrastructure, Utilities and Transportation, Miscellaneous industry, and Trade and Service sectors. Debt to Equity Ratio (DER) individually have significant influence towards the yield (return) shares for Basic Industry and Chemicals, Consumer Goods Industry, and Miscellaneous industry sectors. Operation Leverage (DOL) individually have significant influence towards the yield (return) shares for Basic Industry and Chemicals, Consumer Goods Industry, Infrastructure, Utilities and Transportation, Miscellaneous industry sectors.