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All Journal IJEBA (International Journal of Economic, Business & Applications)
Yafiz, Ifa Adina
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Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Social Sciences

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“More Valuable?” Portfolio Mix: Islamic Social Responsibility Stock (Case Study On Sri-Kehati Stock Index And Indonesian Sharia Stock Index) Wahyuni, Herwinda Asri; Rokhmawati, Andewi; Fathoni, Ahmad Fauzan; Yafiz, Ifa Adina
International Journal of Economic, Business & Applications Vol. 6 No. 2 (2021): International Journal of Economic, Business and Applications
Publisher : Program Pascasarjana, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeba.64

Abstract

This research was conducted to analyze the optimal portfolio formation using the Single Index Model method by combining stocks included in the SRI-Kehati Index and listed on the Indonesian Sharia Stock Index (ISSI) with the aim of survival and applying sharia principles then measuring optimal portfolio performance using Sharpe Index, Treynor Index, and Jansen Alpha Index. The object of research used is stocks that are consistently included in the Sri Kehati Index and ISSI for the period December 2018 - December 2019. The results of this study show that the optimal portfolio formed has a higher return compared to the benchmark (IHSG) which is 1.99%, meanwhile, the standard deviation of the portfolio or it can be interpreted as portfolio risk is 1.1%. In performance appraisal, in addition to the Jensen Index, the optimal portfolio formed has better performance than the IHSG.
The Effect of Internet Banking, Size, NPL and CAR on Net Interest Margin (NIM) and Banking Efficiency in Indonesia During Covid-19 Pandemic Putri, Riescy Nanda; Yafiz, Ifa Adina
International Journal of Economic, Business & Applications Vol. 8 No. 1 (2023): International Journal of Economic, Business and Applications
Publisher : Program Pascasarjana, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeba.84

Abstract

This study analyzes the effect of Internet Banking, Size, NPL and CAR on profitability and efficiency of Indonesian banking as proxied by Net Interest Margin (NIM) and Operating Costs and Operating Income (BOPO) during the pandemic COVID-19 (2020-2021). This study also looks at the effect of Firm Size (Size), Capital Adequacy Ratio (CAR) and Non Performing Loans (NPL) on profitability and efficiency in that period. The population is Indonesian conventional banks registered in Bank Indonesia (2020-2021), totaling 117 banks. The sample was determined using purposive sampling, 62 banks in total. The method used is multiple linear regression with dummy variables. The results showed that internet banking had a significant negative effect on NIM and internet banking had a significant positive effect on BOPO. Another variable is size has no effect on NIM and has a significant negative effect on BOPO. CAR has no effect on NIM and has a significant negative effect on BOPO. Meanwhile, NPL has a significant negative effect on NIM and a significant positive effect on BOPO. The factor that has the biggest influence on NIM is NPL. While the factors that affect BOPO more are CAR and NPL. Banks are expected to pay more attention to the level of capital adequacy, credit risk and the level of total assets to increase bank profitability and efficiency in the future in dealing with the pandemic situation.
Co-Authors Ahmad Fauzan Fathoni Putri, Riescy Nanda Rokhmawati, Andewi Wahyuni, Herwinda Asri