This study analyzes the performance of the Indonesian banking sector efficiency and peeling technique factors that lead to inefficiencies that could reduce the bank's internal performance using Data Envelopment Analisys model (DEA). Research on the efficiency of banking techniques in Indonesia in 2000-2004 conducted using secondary data analysis including balance sheets and income statements of banks in Indonesia 12, the number of bank offices, and the number of bank employees in 2000 until 2004. Results of DEA analysis for the entire group decreased efficiency of banks during the crisis, except Bank Mandiri. This means that Bank Mandiri has the best performance compared to other banks. Inefficiency generally caused by using less than optimal inputs to produce output. Inputs that have not been completely allocated are assets and labor are not on optimizing the range below 50 percent. To produce the maximum efficiency, the bank must increase the use of its inputs to 100 percent.

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This research is conducted to analyze the influence of fundamental factor of company to stock return on coal mining sector which listed in Indonesia Stock Exchange in year 2014-2016. Fundamental factors are represented by CR, MP/TA, FA/TA, DER and ROA. The object of this research is the coal mining sector companies listed on the Indonesia Stock Exchange which submits the financial statements during the period 2014-2016. The sample of this research consists of 11 companies and 33 observations. Statistical methods used in this research is multiple regression analysis.The results of this research indicate that FA/TA and ROA affect stock return on coal mining sector which listed in Indonesia Stock Exchange in year 2014-2016, while CR, MP/TA, and DER  do not affect to stock return on coal mining sector which listed in Indonesia Stock Exchange in year 2014-2016. Penelitian ini dilakukan untuk menganalisis pengaruh faktor fundamental perusahaan terhadap return saham pada sektor pertambangan batu bara yang terdaftar di Bursa Efek Indonesia pada tahun 2014-2016. Faktor fundamental di wakili oleh CR, MP/TA, FA/TA, DER dan ROA. Obyek penelitian ini adalah perusahaan yang termasuk di dalam sektor pertambangan batu bara yang terdaftar di Bursa Efek Indonesia yang menyampaikan laporan keuangan sepanjangperiode tahun 2014-2016. Sampel penelitian ini terdiri dari 11 perusahaandengan jumlah pengamatan sebanyak 33 pengamatan. Metode statistik yang di gunakan dalam penelitian ini adalah analisa regresi berganda. Hasil penelitian ini menunjukan bahwa FA/TA dan ROAmemberikan pengaruh teradap return saham pada sektor pertambangan batu bara yang terdaftar di Bursa Efek Indonesia pada tahun 2014-2016, sedangkan CR, MP/TA dan DER tidak memberikan pengaruh terhadap return saham pada sektor pertambangan batu bara yang terdaftar di Bursa Efek Indonesia pada tahun 2014-2016.

Finding a determinant of profitability has become one of the most popular topics in banking research. Previous research has identified many factors that significantly influence bank profitability. There are also many studies that measure the effectiveness of sharia banking globally, but few analyze the profitability issues of sharia banks. This study aims to analyze the impact of factors affecting profitability in Islamic Banks listed on the Indonesia Stock Exchange. The method used was multiple linear regression analysis. The variables were return on assets as dependent variable and murabahah, musyarakah, mudharabah, branch office, cash office, and Automatic Teller Machine as independent variables. This study found that funding factors, such as murabaha, musharaka, and conventional and electronic networking factors, such as branch office, cash office, and ATM, had positive and significant impact on profitability of sharia bank, while mudharabah had a negative and significant influence on profitability of sharia bank. Sub-branch offices also had a negative but insignificant effect on the profitability of sharia banks. This result indicated that income on management became the most dominant income in generating profit for sharia banking. However, the management of funds could not work if they were not supported by Islamic banking channeling tools.

Red chili is an agricultural commodity with high price volatility. Several previous studies stated that volatility was caused by weather effect on red chili production and shocks on public consumption. However, the other research stated that volatility was caused by the government’s import of red chili. This research aimed to analyze the price volatility of red chili in Semarang Regency on January 2019 to February 2020. The ARCH-GARCH method was applied in this study. This research showed that the price volatility of red chili occurred at the beginning, middle, and end of the year due to climate change, changes in public consumption patterns on religious holidays, and oversupply. However, the prevalence of Indonesia’s imports of red chili did not affect the price volatility. The government is suggested to implement a mapping policy and planting patterns to ensure the supply of red chili.