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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).

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.

The purpose of this research is to develop learning media in the form of interactive PowerPoint and evaluate the feasibility of its use in improving students' understanding of Islamic communication ethics, especially for grade 9 students at SMPN 07 Jakarta. The method in this study uses R&D (research and development) with the utilization of the ADDIE model, the data is tested using the Aiken-V index. The underlying theory in this study highlights the importance of learning media as a tool that can enrich the teaching and learning process. PowerPoint was chosen because of its ease of use and its ability to present information in an attractive visual and verbal manner. This research ultimately developed learning media in the form of Interactive PowerPoint designed to improve students' understanding of Islamic communication ethics. Based on the results of the study, the interactive PowerPoint media was determined to be feasible to implement by achieving an average validity of 0.88888889 which means it meets high criteria, this research contributes to enriching the development of PowerPoint learning media and communication ethics materials at various levels.

This research aims to design and develop effective learning media, which is based on animated videos about the importance of tolerance and communication ethics. The method used in this research is qualitative with an R&D (Research and Development) approach. The research subjects involved three material experts, one media expert, as well as Islamic Religious Education (PAI) teachers and Counseling Guidance (BK) teachers. The results showed that the material feasibility test using the Aiken-V index obtained a value of 0.84, which indicates a very high category and means very feasible. While the results of the media feasibility test reached a value of 1, which also means very high and feasible. Thus, this video-based learning media is very feasible to use to improve students' understanding of religious tolerance and communication ethics. However, there are some evaluations related to this learning media, especially regarding the duration of the video which is considered too long. This can cause students to lose focus and interest. Therefore, it is recommended to revise the duration of the video to make it more concise and concise, so that it can increase the effectiveness of material delivery.

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 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.

This study aims to determine the effect of efficiency, sales growth, capital working, and firm age on firm profitability in Companies publish syariah stock that listed on the Jakarta Islamic Index 70 (JII70) for the 2019 – 2023 period of 70 companies. The data used in this study were obtained from financial statement data and annual reports. The population in this study are companies that publish syariah stock that listed on  the Jakarta Islamic Index 70 (JII70). The sampling technique used was purposive sampling method and obtained 185 sample data from 37 companies. The analysis technique used in this study is multiple linear regression analysis using the Statistical Package for the Social Sciences (SPSS) version 22. The results of this study indicate that efficiency and sales growth have a positive effect on firm profitabillity, capital working have a negative effect on firm profitability, and firm age has no effect on firm profitability.

This research aims to determine the influence of the Current Ratio, Debt To Equity Ratio, Total Asset Turnover and Return On Equity on Share Prices in Jakarta Islamic Index Public Companies on the Indonesia Stock Exchange (BEI) for the 2019-2023 period. This research uses quantitative research methods with a population and sample from the Jakarta Islamic Index Public Companies on the Indonesia Stock Exchange for the 2019-2023 period. There are 16 companies that are the object of this research, determined using certain criteria. The analytical methods in this research consist of the classic assumption test, correlation coefficient analysis test, multiple linear regression analysis test, determination analysis test (R2), t test and F test. Meanwhile, the data analysis method used is multiple linear regression with a significance value of 0.05 using Static Product and Service Solution (SPSS) Version 22.0. The results of this research show that the Current Ratio partially influences and significant share prices, while the Debt To Equity Ratio, Total Asset Turnover and Return On Equity have no influence and not significcant on share prices. Simultaneously Current Ratio, Debt To Equity Ratio, Total Asset Turnover and Return On Equity influence share prices.

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.

This research was conducted with the intention of knowing how the impact is generated by Return on Investment, Debt to Equity Ratio and Net Profit Margin on Firm Value as measured by Tobin's Q ratio. The research was conducted on the Jakarta Islamic Index 70 companies listed on the Indonesia Stock Exchange. The method used in this research is quantitative method. Where in this study we use the numbers obtained from the calculation of the ratios carried out. obtained from the ratio calculations carried out. In addition, we also adopted purposive sampling method to limit the research. The data obtained in this research. The research findings show that there is a negative impact of Return on Investment. show that there is a negative impact caused by Return on Investment and Debt to Equity Ratio to Tobin's Q Value. While Net Profit Margin has a positive impact on Tobin's Q Value. Simultaneously overall independent variables in this study were also found to have an impact on the dependent variable. dependent variable. As well as in correlation, there is a correlation of 27.6 percent independent variables to the dependent variable. While the rest, which is 72.4 percent may be influenced by other variables not tested in this study.

The aim of this research is to determine the effect of solvency, liquidity, profitability and company size on audit report lag in companies listed on the Jakarta Islamic Index 70 on the Indonesia Stock Exchange in 2020-2022. The method used in this research is a quantitative method. This research uses secondary data in the form of annual reports of the companies sampled in the research and can be obtained from the Indonesian Stock Exchange website. Samples were taken using purposive sampling technique, totaling 14 companies. The data obtained and collected was then processed using the SPSS 27 application. The data analysis techniques used were descriptive statistics, classical assumption testing, multiple linear regression analysis, and hypothesis testing. Based on the research results, it shows that partially solvency has an effect on audit report lag, while profitability, liquidity and company size have no effect on audit report lag. Simultaneously, solvency, liquidity, profitability and company size have no effect on audit report lag.      

This research is motivated by the complex relationship between operating leverage, financial leverage, and earnings per share (EPS) in the context of corporate finance. This research aims to analyze the impact of operating leverage and financial leverage on earnings per share in manufacturing companies listed on the Jakarta Islamic Index during the period 2018-2022. Utilizing financial data from the sample companies, the study adopts a quantitative approach with regression analysis using Eviews to evaluate the relationship between operational and financial leverage with the performance of earnings per share. The research results indicate that operating leverage does not have a significant effect on earnings per share, with a partial test probability value of 0.9744 > 0.05. Financial leverage also does not have a significant effect on earnings per share, with a partial test probability value of 0.7368 > 0.05. Simultaneously, operating leverage and financial leverage do not have a significant effect on earnings per share, with a simultaneous test probability value of 0.94578 > 0.05. The calculation of the coefficient of determination shows that the independent variables in the model fail to explain the variation in the dependent variable well. Subsequent research is recommended to increase the sample size of manufacturing companies listed on the JII and replace insignificant independent variables with others that can significantly influence earnings per share.

The development of Islamic economics with the application of sharia principles in economic activities is starting to be practiced in the field of sharia finance. This started with the establishment of sharia banking, then followed by the emergence of the sharia capital market as an investment tool to attract profits and seek capital. The Jakarta Islamic Index (JII) as the antithesis of the conventional capital market has challenges when carrying out investments using sharia principles, this is because securities in the form of shares are greatly influenced by macroeconomic aspects such as interest rates. So sharia share prices are very sensitive to the dynamics of interest rates. This research seeks to see the extent of the influence of interest rates on sharia sham prices at JII. The method used is VECM analysis to see long-term effects. The results of this research found that the interest rate variable did not significantly influence sharia stock prices in the long term, however the results of the VECM analysis found that there was a negative relationship, meaning that there was still an influence, although not significant. So sharia share prices can still be affected by changes in conventional interest rates.

This study aims to determine the effect of dividend policy, and capital structure on firm value in companies listed on the Jakarta Islamic Index with corporate social responsibility as a moderating variable. The research design used is the casual design method. The population used in this study were companies listed on the Jakarta Islamic Index for the 2019-2021 period. purposive sampling technique was used in sampling so that 41 companies were obtained by analyzing data as many as 123 samples. The data analysis technique used is panel data analysis using the E-views program. The results showed that dividend policy has a positive and insignificant effect on firm value, capital structure has a negative and significant effect on firm value, corporate social responsibility cannot moderate the effect of dividend policy on firm value, corporate social responsibility can moderate the effect of capital structure on firm value.

Tujuan penelitian ini untuk melihat pengaruh Arus Kas, Laba Akuntansi, Market Ratio dan Solvabilitas terhadap Return Saham pada perusahaan yang terdaftar di Jakarta Islamic Index Tahun 2019-2021. Objek penelitian ini terdiri dari 15 perusahaan yang termasuk dalam Jakarta Islamic Index di Bursa Efek Indonesia. Metode yang digunakan untuk menguji hipotesis dalam penelitian ini adalah analisi regresi data panel. Hasil dari pengujian pada penelitian ini menunjukkan Laba Akuntansi dan Market Ratio berpengaruh positif dan signifikan terhadap Return Saham, sedangkan Arus Kas dan Solvabilitas tidak berpengaruh terhadap Return Saham.