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Each country has different holiday policies, but the number of holidays in Indonesia is quite large, which impacts uncertainty for investors when buying or selling shares. These events can cause market anomalies or irregular market conditions and produce abnormal returns at certain times, known as the holiday effect. This study uses a quantitative descriptive method with an event study approach, data collection is carried out using documentation and literature methods. The data used are secondary data in the form of the Jakarta Composite Index (JCI), the LQ45 Index, and the Jakarta Islamic Index (JII) from the official website of the Indonesia Stock Exchange (IDX). Exchange rate data is taken from the official website of Bank Indonesia. The population of this study is every company listed on the IDX, while the data used are JCI, LQ45, and JII data 6 days before and 6 days after the Eid al-Fitr holiday and regular trading days from 2011-2025. The results of the study show that there is no significant difference in the JCI, LQ45 Index, or JII before and after the Eid al-Fitr holiday, so there is no holiday effect. These results indicate that all three indices reflect a market that tends to be efficient and stable in responding to seasonal events. Furthermore, the Rupiah exchange rate had a negative but significant effect on the Jakarta Composite Index (JCI). The Rupiah exchange rate had a negative but insignificant effect on the JII before and after the Eid al-Fitr holiday. The Rupiah exchange rate had a positive but insignificant effect on the LQ45 Index before and after the Eid al-Fitr holiday.

This study aims to analyze the effect of Environmental, Social, and Governance (ESG) on the financial performance of mining companies listed in the Jakarta Islamic Index (JII70) for the 2020–2024 period, with the Debt to Equity Ratio (DER) as a control variable. The findings show that, partially, the Environmental variable has a positive but insignificant effect on ROA, indicating that efforts in energy efficiency, waste management, and emission reduction have not yet been fully reflected in short-term profitability. In contrast, the Social variable has a significant effect on ROA, emphasizing that companies’ engagement in building stakeholder relationships, protecting employee rights, and implementing social responsibility programs contribute substantially to financial performance. The Governance variable also has a significant effect on ROA, highlighting the importance of good governance practices, transparency, and accountability in enhancing profitability. Meanwhile, the control variable DER shows no significant effect on ROA. Simultaneously, ESG performance has a significant effect on ROA, proving that integrated ESG implementation supports the profitability of mining companies. These findings confirm that ESG is not only a compliance measure with sustainability principles but also a long-term business strategy that strengthens companies’ competitiveness and serves as a crucial consideration for investors in making investment decisions.

This study investigates the potential role of the Jakarta Islamic Index (JII) as a hedging instrument and safe haven asset against the Indonesia Composite Index (IHSG) during the period from January 2020 to April 2025, a time characterized by elevated market volatility. The main objective is to determine whether sharia-compliant stocks in Indonesia offer diversification benefits during periods of financial stress. Utilizing daily closing prices converted into log returns, the study employs the Asymmetric Dynamic Conditional Correlation Generalized Autoregressive Conditional Heteroskedasticity (A-DCC GARCH) model to capture time-varying correlations between JII and IHSG. Prior to applying the model, standard diagnostic tests were performed to ensure data quality, including tests for stationarity, autocorrelation, and ARCH effects.Empirical results reveal a persistently high correlation between IHSG and JII, with an average of 0.826 and values exceeding 0.95 during periods of market turbulence. These findings indicate that JII does not fulfill the characteristics of a hedge or safe haven asset. A robustness analysis using extended data from 2010 to mid-2025 further supports the conclusion, showing the continued presence of strong comovement between the two indices across different market regimes. This suggests a structural relationship rather than one driven solely by crisis events. The high correlation may be attributed to overlapping index constituents and similar investor responses to market shocks. These results challenge the prevailing notion that Islamic indices inherently offer protection during downturns. As such, investors seeking to mitigate portfolio risk may need to look beyond domestic sharia equities and consider broader asset classes or international diversification. Future research is encouraged to explore cross-market and multi-asset safe haven properties, especially in the context of emerging economies.

The objective of this study is to examine whether the macroeconomic variables Exchange Rate, Money Supply (M2), and the international stock indices Dow Jones Islamic Market (DJIM) and Dow Jones Industrial Average (DJIA) have an influence on the movement of Sharia stocks in Indonesia and Malaysia (Jakarta Islamic Index and FTSE Bursa Malaysia Hijrah Shariah Index). The analytical method used in this research is multiple regression analysis. The data utilized are monthly data spanning the period from January 2015 to December 2024. The results of the study indicate that the Jakarta Islamic Index (JII) is significantly influenced by the Exchange Rate and the Dow Jones Industrial Average (DJIA). Specifically, both the Exchange Rate and DJIA show effects that are consistent with the hypothesis expectations. The Exchange Rate has a negative and significant effect on the Jakarta Islamic Index (JII), while the DJIA has a positive and significant effect. Meanwhile, the Money Supply (M2) and the Dow Jones Islamic Market (DJIM) are not found to have a significant effect on the Jakarta Islamic Index (JII). The FTSE Bursa Malaysia Hijrah Shariah Index (FHSI), on the other hand, is significantly influenced by the Dow Jones Islamic Market (DJIM). Specifically, DJIM has a positive and significant effect on FHSI. Conversely, the Exchange Rate, Money Supply (M2), and Dow Jones Industrial Average (DJIA) are not found to have a significant effect on the FTSE Bursa Malaysia Hijrah Shariah Index (FHSI).

Background: Patient satisfaction is a form of feeling happy or disappointed with the service received after the patient compares it with what is expected. In the era of digitalization, telemedicine has an impact on health services, especially patient satisfaction. This study aims to determine the use of telemedicine on increasing patient satisfaction in health services in Indonesia. Research methods: Systematic review using PRISMA guidelines and the PICO model, Population = patients who use telemedicine; Intervention = telemedicine; Comparison = not using telemedicine; Outcome = patient satisfaction in health services in Indonesia. Articles were collected through Google Scholar, Jurnal Manajemen Kesehatan (JMK), Jurnal Kebijakan Kesehatan Indonesia (JKKI), Jurnal Pendidikan dan Teknologi Kesehatan (JPTK), Jurnal Ilmiah Indonesia (JII), and Jurnal Komunikasi which focus on Indonesia. Keywords use: patient satisfaction, health services, telemedicine, Indonesia. A total of 6 articles met the inclusion criteria for a systematic review. Results: 6 articles out of 119 articles were studied for systematic review. Six articles did not find a significant difference in patient satisfaction between telemedicine and face-to-face meetings. There are several factors that influence patient satisfaction, including: most are female, productive age, college educated, and work as private employees. Conclusion: Telemedicine services have been shown to increase patient satisfaction in health services in Indonesia. This shows that the more telemedicine services used, the higher the level of patient satisfaction. However, further research is needed to analyze how effective the use of telemedicine is on patient satisfaction in health services in Indonesia.

Patient satisfaction is a form of feeling happy or disappointed with the service received after the patient compares it with what is expected. In the era of digitalization, telemedicine has an impact on health services, especially patient satisfaction. This study aims to determine the use of telemedicine on increasing patient satisfaction in health services in Indonesia. Systematic review using PRISMA guidelines and the PICO model, Population = patients who use telemedicine; Intervention = telemedicine; Comparison = not using telemedicine; Outcome = patient satisfaction in health services in Indonesia. Articles were collected through Google Scholar, Jurnal Manajemen Kesehatan (JMK), Jurnal Kebijakan Kesehatan Indonesia (JKKI), Jurnal Pendidikan dan Teknologi Kesehatan (JPTK), Jurnal Ilmiah Indonesia (JII), and Jurnal Komunikasi which focus on Indonesia. Keywords use: patient satisfaction, health services, telemedicine, Indonesia. A total of 6 articles met the inclusion criteria for a systematic review. 6 articles out of 119 articles were studied for systematic review. Six articles did not find a significant difference in patient satisfaction between telemedicine and face-to-face meetings. There are several factors that influence patient satisfaction, including: most are female, productive age, college educated, and work as private employees. Telemedicine services have been shown to increase patient satisfaction in health services in Indonesia. This shows that the more telemedicine services used, the higher the level of patient satisfaction. However, further research is needed to analyze how effective the use of telemedicine is on patient satisfaction in health services in Indonesia.

This study aims to determine the effect of transfer pricing, thin capitalization, capital intensity and audit quality on tax avoidance. The population in this study are companies that have been listed on the Jakarta Islamic Index (JII) during the 2019-2023 period, totaling 54 companies. The sample in this study amounted to 19 multinational companies or 95 observation data determined by purposive sampling method. The data analysis used is multiple linear regression analysis with dummy variables with the SPSS 29 program. The results showed that transfer pricing partially had a negative and significant effect on tax avoidance, while thin capitalization, capital intensity and audit quality partially have no significant effect on tax avoidance. However, transfer pricing, thin capitalization, capital intensity and audit quality simultaneously have a positive and significant effect on tax avoidance.

This study examines and compares the Capital Asset Pricing Model (CAPM) with the Sharia Compliance Asset Pricing Model (SCAPM) in constructing an optimal stock portfolio based on the sharia stock index on the Indonesia Stock Exchange, specifically the Jakarta Islamic Index (JII), during the 2019–2023 period. The primary aim is to evaluate whether the SCAPM, which incorporates mudharabah profit-sharing returns in place of the risk-free rate, offers more relevant insights for Muslim investors compared to the CAPM. Utilizing a quantitative approach and a two-step regression method, the research develops an optimal portfolio by calculating stock betas and analyzing the relationship between systematic risk and expected returns. The findings reveal that neither the CAPM nor the SCAPM models are valid for predicting risk and expected returns for the JII's optimal stock portfolio. This study is intended to guide sharia-compliant investors in making informed decisions and assist investment managers in designing strategies aligned with Islamic financial principles.

The aim of this research is to determine the influence of Intellectual Capita, Good Corporate Governance, Accounting Conservatism on finance with company size as a moderating variable in companies registered on the Jakarta Islamic Index (JII) 2018-2022. Data used is quantitative source secondary data company financial reports for 2018-2022. Data analysis uses multiple linear regression and hypothesis testing. The research results obtained were that Intellectual capital and accounting conservatism had a significant effect on ROA in companies listed on (JII) 2018-2020, while good corporate governance had no significant effect on ROA in companies listed on (JII) 2018-2020. Intellectual capital has a significant effect on ROA with company size as a mediating variable in companies listed (JII) 2018-2020. Meanwhile, good corporate governance and accounting conservatism do not have a significant effect on ROA with company size as a mediating variable in companies listed (JII) for 2018-2020.

The main objective of this study is to examine the impact of investment on stock performance both directly and by using the role of liquidity. The population of shares included in JII70 for the 2019-2022 period, using purposive sampling, obtained 38 shares that met the criteria, thus there were 152 data used in testing, using the MRA analysis tool. The test results showed that investment had a significant direct impact on improving stock performance, and was also further strengthened by liquidity.

The Financial Services Authority (OJK) stated that the improving conditions of the Covid-19 Pandemic had an impact on Indonesia's economic growth with growth in Q4-2021 of 5.02% (yoy). In maintaining the momentum of economic recovery during the Covid-19 pandemic, the sharia financial services industry also experienced positive growth with Indonesian sharia financial assets able to grow by 13.82% (yoy) to IDR 2,050.44 trillion in 2021, and the previous year 2020 amounted to IDR 1,801.40 trillion, while in 2019 it amounted to IDR 1,291.48 trillion and in 2018 it amounted to IDR 1,265.97 trillion. This shows that sharia finance is able to survive well during the Covid-19 era. This research aims to determine the effect of Debt to Assets Ratio (DAR) and Debt to Equity Ratio (DER) on Return On Equity (ROE) in companies listed on the Jakarta Islamic Index (JII) for the 2018-2021 period. The method used in this research is quantitative research methods. The sample used is companies registered on the Jakarta Islamic Index (JII). Based on the purpose sampling method, there were 9 companies that met the criteria. The results of this research show that partially the Debt to Assets Ratio (DAR) has no significant effect on Return On Equity (ROE), while the Debt to Equity Ratio (DER) has a significant effect on Return On Equity (ROE) in Jakarta Islamic Index companies. This research also shows that simultaneously Debt to Assets Ratio (DAR) and Debt to Equity Ratio (DER) have a significant effect on Return On Equity (ROE) in Jakarta Islamic Index companies.

Research of stock portfolio performance based on market to book value (PBV) and market capitalization are still a debate and pro kontra. The purpose of this research is to analyze the performance of stock portfolio based on PBV and market capitalization. The samples of this study Jakarta Islamic Indeks (JII)  during periode 2020-2022. Total Observation of 60 was determined by purposive sampling method. Performance of stock portfolio based on PBV is devided by 2 format stock portfolios, namely: PBV high and PBV low. For market capitalization is devided by 2 format stock portfolio namely : big market capitalization and small market capitalization. All of them are measured by Risk  Adjusted Return (index of Sharpe and Treynor). The result of these research is stock portfolio performance namely PBV low is outperform than PBV high, big market capitalization and small market capitalization which measured by index Sharpe and index Treynor during periode 2020 – 2022 at Jakarta Islamic Indeks (JII). The implication of this study suggests to perform of  stock performance namely PBV low which havethe  potential high earning growth because PBV less than one, means undervalued.

This research aims to test whether investment decisions, funding decisions and dividend policy influence company value. The data used in the research is secondary data. The population of this research is companies registered in the Jakarta Islamic Index (JII) 70 for 2018-2021. Determining the sample in the research used the porpusive sampling method with special criteria to obtain 68 data. The results of this research prove that the influence of investment decisions on company value is 0.256 > 0.05 and the calculated t value is 1.147 < 1.99714. There is no influence of investment decisions on value. Company. The influence of funding decisions on company value is 0.000 < 0.05 and t count is 6.384 > 1.99714. There is a significant influence of funding decisions on company value. The influence of dividend policy on company value is 0.116 > 0.05 and the calculated t is 1.595 < 1.99714 so it can be concluded that there is no influence of dividend policy on company value.

Financial information will have benefits if it is delivered on time to the user, which is closely related to agency theory, where in agency theory it is explained that the owner supervises the agency (employees) so that it can perform more efficiently. The value of timeliness of financial reporting is important for the level of usefulness of the report. This research aims to examine profitability and company size on delays in company financial reports. This research sample consists of 12 companies with 36 financial report data registered with JII for 2019-2021. To test the hypothesis, secondary data was used using the purposive sampling method. The data analysis technique uses multiple linear regression analysis. The results of the analysis show that the profitability variable has a significance value of 0.036, which means that hypothesis X1 has a positive effect on delays in the company's financial reports because the significance value is less than 0.05. The company size variable has a significance value of 0.001, meaning that hypothesis X2 has a significant effect on variable Y because the significance value is less than 0.05

Penelitian dan analisi ini bertujuan untuk memperoleh sebuah bukti empiris mengenai pengaruh dari, rasio lancar (current ratio) dan rasio cepat (quick ratio) terhadap harga saham. Penelitian ini menggunakan data sekunder yang bersifat kuantitatif. Teknik yang digunakan dalam penelitian ini adalah teknik sampling, Teknik sampling yang diguunakan adalah tenik sampling jenuh, metode analisis yang digunakan yaitu analisis regresi liinier berganda dengan menggunakan aplikasi SPSS versi 25. Sampel yang digunakan dalam penelitian ini yaitu seluruh populasi yaitu, laporan keuangan PT Aneka Tambang Tbk periode 2015-2022 per triwulan, secara keseluruhan jumlah sampel selama 8 tahun terakhir sebanyak 31 sampel. Hasil penelitian dengan menggunakan pengujian hipotesis menggunakan uji T menunjukkan bahwa Rasio lancar (current ratio) berpengaruh signifikan terhadap harga saham Syariah dan Rasio cepat (quick ratio) tidak berpengaruh signifikan terhadap harga saham Syariah pada PT Aneka Tambang Tbk yang terdaftar di Jakarta Islamic Index Periode 2015-2022.

This research was conducted to see whether there was an abnormal return before and after the Jakarta PSBB announcement. The sample was selected using a purposive sampling technique from 30 stocks that are members of the Jakarta Islamic Index (JII) in the 2020 period. The data in this study used secondary data, opening, and closing prices, and Composite Stock Price Index (IHSG). This research is an event study using an event study with an observation period of eight days, four days before the announcement and after the day after the announcement of the Jakarta PSBB. Hypothesis testing uses the Wilcoxon signed ranking test. Based on the research results, there was no change in abnormal return before and after the announcement of the Jakarta PSBB announcement

This study aims to determine the Company Size, Leverage, Company Value on Tax Avoidance: The Case of Companies Listed in the Jakarta Islamic Index (JII). The approach used in this research is a quantitative approach. The data in this study are secondary data. Data obtained from the page www.idnfinancial.com. Sampling technique using purposive sampling technique and data analysis using multiple linear regression analysis. The findings show that Company Size and Firm Value do not affect Tax Avoidance while Leverage has a significant effect on Tax Avoidance

This study aims to examine and analyze the Influence of Corporate Age, Company Size, Leverage, Liquidity, Profitability and Environmental Performance on Disclosure of Islamic Social Reporting on companies listed in Jakarta Islamic Index (JII) in 2012 – 2015. Object of research on companies listed in Jakarta Islamic Index (JII) in the first period in 2012 - 2015 and obtained 56 companies that become the sample. Sampling technique using purposive sampling. The data analysis used in this research is OLS (Ordinary Least Squerst) multiple linear regression, to get a complete picture about the influence of each independent variable to the dependent variable.The results of this study found firm age, firm size, and liquidity significantly positive impact on the disclosure of Islamic social reporting, while leverage, Profitability and Environmental performance does not affect the disclosure of Islamic social reporting. Keywords: ISR, age of firm, company size, leverage, liquidity, profitability, environmental performan

The purpose of this research are to analyze the practice of social responsibility disclosure on companies listed in the Jakarta Islamic Index (JII) and to test the effect of disclosure of corporate social responsibility toprofitability ROA (ratio of return on assets) and ROE (ratio of return on equity) as well as the company's reputation measured from the stock price. This research are conducted using a sample of 39 go public companies that has been registered at the Jakarta Islamic Index (JII) using annual reports from 2012 to 2014. Methods of sample selection using purposive sampling. The analysis model is a simple regression. The results showed that the level of social responsibility disclosure of significant effect on ROA on firm, level of social responsibility disclosure a significant effect on ROE and the company's reputation.

This study aims to analyze the influence of Internet FinancialReporting (IFR) , Level Disclosure and Timeliness (Timelines)Submission of Financial Information Website On The Stock Market.Sample in this study consisted of 70 companies listed in the JakartaIslamic Index (JII) from 2008-2012. Data analysis uses multipleregression analysis.The results of hypothesis testing showed that theIFR has a significant influence on the abnormal stock returns, thelevel of disclosure has negative effect on abnormal stock returns andtimeliness has no significant effect on abnormal stock returns.