Isfenti Sadalia

The purpose of this study is to examine the effect of market power and income diversification on the General Bank stability in Indonesia. This research uses a data sample of 20 general banks listed on the Indonesia Stock Exchange for the period of 2011–2014. Data analysis technique used is Multiple Linear Regression. It can be concluded simultaneously that market power and revenue diversification have significant effect on bank stability and, partially, market power has a positive and significant effect on a bank stability. Income diversification has a positive non-significant effect on bank stability.

There are two sectors of banks operating in Indonesia, namely Sharia banks and conventional banks. Improving performance is important in maintaining public confidence in the bank. Efficiency is one of the parameters to measure the performance of Sharia banks. This study measures the comparative level of technical efficiency of Sharia commercial banks and conventional banks by Stochastic Frontier Analysis method during 2011–2015 period by using 10 samples of Sharia commercial banks and conventional banks. Input variables in this study are total deposits, operational costs, and other operational costs. Total financing is an output variable. The results of this study show that total deposits and operational costs have a positive and significant impact on total financing in Sharia and conventional banks. The average score of the technical efficiency of Sharia commercial banks during the period observed is 0.84 and conventional banks is 0.85.