This study aims to analyze the effect of mudharabah, musyarakah, and murabahah financing on the level of profitability in banks using the Return on Assets (ROA) ratio simultaneously and partially. The sample used in this study was 42 data from the results of the outlier test which previously had 52 sample data into 42 sample data with the study population using 7 (seven) Islamic commercial banks until 2019. The data analysis method used in this study was multiple linear regression of panel data. The results of this study indicate that partially mudharabah financing has no significant negative effect on the level of profitability, while musharaka partially has a negative effect on the level of profitability. Murabahah financing has a significant positive effect on profitability.

This study aims to determine whether there is an effect of CAR, NPL, and BOPO on ROA at BJB Bank for the period 2011 to 2018.The data used in this study uses secondary data in the form of BJB Bank Quarterly Published Financial Reports for the period 2011 to 2018 published by the Authority. Financial Services (OJK). The sample used is one company, namely Bank BJB as the object of research. The method used in this research is quantitative method. Tools to analyze data using multiple linear regression analysis and hypothesis testing using the t test and f test. This study uses the SPSS version 26 program to process data. The results of the research simultaneously show that the variables CAR, NPL, and OEOI have an effect on ROA. The results of the study partially show that the CAR variable has a significant positive effect on ROA, then the NPL variable has a significant positive effect on ROA, and the BOPO variable has a significant negative effect on ROA. Keywords: Capital Adequacy Ratio (CAR), Non Performing Loan (NPL), Operational Cost of Operating Income (BOPO), Return On Assets (ROA).

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The purpose of this study was to determine whether there is an effect between the current ratio and the Debt on Equity Ratio on the Return on Equity in the Automotive and Component sub-sector companies listed on the Indonesia Stock Exchange for the 2015-2019 period. Purposive sampling technique is used as a sampling technique. There are 8 companies that meet the specified criteria. The type of data used is secondary data obtained from the Indonesia Stock Exchange website. The analytical method used is multiple linear regression analysis. This study shows the results that partially current ratio has no effect on ROE, while DER has a negative effect on ROE. Together, the current ratio and DER have an influence on ROE.

This study aims to determine the effect of Return on Assets (ROA) and Price Earning Ratio (PER) on stock prices. The population in this study was the construction and building sub-sector companies listed on the Indonesia Stock Exchange (BEI) for the 2014-2019 period. Through the purposive sampling method then obtained a sample of 7 companies and obtained 42 data. The data analysis technique used multiple linear regression and hypothesis testing. The results showed that partially Return On Asset has no significant effect on stock prices.

The researcher conducted this research because he was interested in investing in uncertain returns, because this was because the researcher used the variables in this study as consideration.This study aims to determine the effect of Net Profit Margin (NPM), Return On Asset (ROA), Return on Equity (ROE), and Inflation on Stock Prices in LQ45 companies listed on The Indonesia Stock Exchange (IDX) for the period 2015-2019. Stock prices can be an assessment of investor to buy shares of the company. Stock prices tend to fluctuate, so it needs proper observation when making stock purchases. Independent variables in this study are Net Profit Margin (NPM), Return on Asset (ROA), Return on Equity (ROE), and Inflation. Dependent variable in this study is Stock Prices. This study uses quantitative methods using descriptive analysis and verification analysis of companies listed in LQ45. Data analysis technique using the classic assumption test, multiple linear regression, and hypothesis testing using SPSS 21 application. Based on the result of this study indicate the partially Net Profit Margin (NPM) has no effect on Stock Prices. Return on Asset (ROA) has no effect on Stock Prices. Return on Equity (ROE) has a significant effect on Stock Prices. Inflation has no effect on Stock Prices. Simultaneously Net Profit Margin (NPM), Return On Asset (ROA), Return on Equity (ROE), and Inflation have a significant effect on Stock Prices.

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Sektor perdagangan eceran atau ritel di Indonesia berkembang dengan cepat sehingga memicu berkembangnya e-commerce di Indonesia. Konsumen mulai berpaling dari belanja secara tradisional beralih ke situs perbelanjaan online untuk berbelanja karena dinilai lebih praktis dalam berbelanja yang menyebabkan terjadinya penurunan laba pada perusahaan ritel, sehingga banyak peritel yang menutup usahanya. Suatu perusahaan dapat dikatakan sukses atau berhasil ketika perusahan dapat menghasilkan laba. Laba diperlukan untuk kelangsungan hidup perusahaan. Hasil dari penelitian ini menunjukkan bahwa secara parsial Return On Equity berpengaruh terhadap perubahan laba pada perusahaan ritel yang terdaftar di BEI. Sedangkan Debt to Equity Ratio tidak berpengaruh terdaftar perubahan laba pada perusahaan ritel yang terdaftar di BEI.  Secara simultan Return On Equity dan Debt to Equity Ratio secara bersama-sama berpengaruh terhadap perubahan laba pada perusahaan ritel yang terdaftar di BEI.Kata Kunci: Return on Equity, Debt to Equity Ratio, Perubahan laba