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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 investigates the impact of board characteristics on the financial performance of non-financial companies listed in the JII70 index in Indonesia. Motivated by the ongoing debate on the effectiveness of corporate governance mechanisms in enhancing firm outcomes, particularly within Sharia-compliant markets, this study focuses on three key board attributes: board size, board independence, and female representation on the board. Using a quantitative causal approach and panel data from 25 companies over the period 2020–2023, the study employs a fixed effect model to evaluate the relationship between board structure and financial performance measured by Return on Assets (ROA). The results show that board size has a positive and significant effect on firm performance, indicating that larger boards may enhance oversight capacity and provide broader resources beneficial to strategic decision-making. Conversely, board independence and board female representation do not exhibit significant effects on financial performance, suggesting that their roles may be more symbolic or constrained by institutional and contextual factors in the sampled companies. These findings highlight the importance of understanding corporate governance not merely in structural terms, but in relation to functional effectiveness and contextual maturity. The study offers implications for regulators, companies, and governance reform initiatives, particularly regarding strengthening substantive roles of independent and female commissioners in improving firm performance within Sharia-compliant markets.

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.

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.

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.

Mining companies are one of the companies that have great prospects in the future. Mining companies are one of the corporate sectors that are targeted for investment, this causes investors to often calculate share returns for their investments in companies in this sector. Stock returns in companies tend to fluctuate or experience erratic increases and decreases in stock returns. The increase or decrease in stock returns is caused by internal and external factors, internal factors can be seen through financial reports and external factors can be seen from macroeconomic and other factors. This research is secondary data, namely it comes from financial reports of mining companies registered in JII70 for the 2018-2022 period. This research is included in the type of quantitative research, using Eviews as a statistical medium and the statistical methods used in this research are multiple linear regression analysis, panel data testing, classical assumption testing, and hypothesis testing. while the results of this research show that partially both Net Profit Margin and Price To Book Value have a positive and significant effect on Stock Returns as well as simultaneously Net Profit Margin and Price To Book Value together or simultaneously have a positive and significant effect on Stock Returns while inflation weaken the relationship Net Profit Margin and Price To Book Value on Share Returns in mining companies registered on JII70.

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 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.

This research leads to the Effect of the Ratio of Roa, Roe on Profit Building in Mining Companies Listed in the Jakarta Islamic Index for 2018-2022. The benefit of this research is to find out whether there is an effect of the Roa, Roe Ratio on Profit Growth in Mining Companies Registered in the Jakarta Islamic Index for 2018-2022. The analytical method used in this study is panel data regression. and processed data used in this study by utilizing Eviews 12 and Microsoft Excel 2010 software. The sampling method used was purposive sampling, namely by considering several criteria specified in this research. The research results show that Roa has an effect on profit growth and Roe has no effect on profit growth, while together (simultaneously) Roa and Roe have an effect on profit growth in mining sector companies in JII 2018-2022Keywords: net income, total assets and share price

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.