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This study analyzes the economic phenomenon known as the "Purbaya Effect" in the Indonesian capital market during the second half of 2025. This phenomenon is characterized by a significant surge in the Jakarta Composite Index (IHSG), which broke the All-Time High (ATH) record 21 times within four months following the appointment of Purbaya Yudhi Sadewa as Minister of Finance. Using a mixed-methods approach combining quantitative market data analysis and qualitative policy review, this research finds that the "Purbaya Effect" is driven by aggressive liquidity injection policies (Rp 200 trillion), institutional trust built during his tenure at LPS, and strong narrative economics. However, this study also identifies significant risks related to exchange rate volatility and potential economic overheating. The findings suggest that while the "Purbaya Effect" successfully restored short-term investor confidence, long-term sustainability depends on the balance between growth acceleration and macroeconomic stability.

This study aims to analyze the influence of macroeconomic variables in the form of the dollar exchange rate, inflation, and Gross Domestic Product (GDP) on the Composite Stock Price Index (JCI) in Indonesia for the period 2010–2024. The research method used is a quantitative approach with multiple linear regression analysis using time series data obtained from Bank Indonesia, the Central Statistics Agency (BPS), and the Indonesia Stock Exchange (IDX). The data analysis technique was carried out through classical assumption tests and hypothesis testing to determine the relationship between variables. The results of the study show that partially GDP has a significant effect on the JCI, while inflation and the dollar exchange rate tend not to have a significant effect. However, simultaneously these three variables have a significant influence on the JCI. These findings show that macroeconomic stability is very important in maintaining the performance of the capital market in Indonesia and can be a reference for investors in making investment decisions. In addition, the results of the study confirm that national economic growth is the main indicator that market participants pay attention to in assessing investment prospects. Therefore, the government needs to maintain economic stability through effective and sustainable fiscal and monetary policies.

This study aims to analyze the effect of profitability, leverage, and dividend policy on firm value in the energy sector listed on the Indonesia Stock Exchange (IDX) for the 2021–2024 period. The energy sector was selected due to its strategic role in the national economy and its contribution to the Composite Stock Price Index (IHSG). Out of 81 energy sector firms, 22 firms were obtained as samples using a purposive sampling method. Data analysis was conducted using the path analysis technique. The results show that profitability has a significant effect on firm value, while leverage has no effect. Dividend policy also has no effect on firm value, whereas profitability has no effect on dividend policy, and leverage has a significant negative effect on dividend policy. Furthermore, dividend policy is unable to mediate the relationship between profitability and leverage with firm value. These findings imply that firm value is more influenced by profitability factors than by leverage or dividend policy. The results of this study are expected to serve as a reference for firm management, investors, and policymakers in making future financial 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.

Penelitian ini bertujuan untuk menemukan bukti empiris reaksi investor pasar modal Indonesia terhadap peristiwa pengumuman pelantikan Presiden dan Wakil Presiden tahun 2024. Populasi penelitian ini adalah saham-saham yang konsisten terdaftar dalam indeks LQ 45 selama periode penelitian. Data yang digunakan adalah data sekunder berupa harga penutupan saham harian dan IHSG. Uji statistik yang digunakan untuk menguji hipotesis adalah one samples t-test dan paired samples t test. Hasil perhitungan one samples t-test menunjukkan bahwa tidak terdapat rerata return tidak normal positif yang signifikan di sekitar tanggal peristiwa, yang berarti investor tidak merespon peristiwa pengumuman pelantikan Presiden dan Wakil Presiden tahun 2024. Hasil uji paired samples t test membuktikan bahwa tidak terdapat perbedaan yang signifikan rerata return tidak normal maupun rerata trading volume activity antara sebelum dan setelah peristiwa.

This research explores how several monetary policy and commodities market influence the movement of the Indonesia Composite Index (IHSG). Monetary policy is a set of actions taken by the central bank to regulate the currency and the economy, variable proxy is Rupiah Exchange Rate (Jisdor) and Indonesia Overnight Index Average (indONIA). Commodity markets are places where commodities are traded in physical or futures, the needs of the world still depend on certain commodities so that commodity prices can be related to economic conditions, variable proxy of comodities market is Gold, Crude Oil WTI, Coal Newcastle. Indonesia Composite Index is a index that reflects the price movements of all stocks listed on the Indonesia Stock Exchange. The study analyzes monthly data from January 2019 to December 2023, a period before the global disruption of the COVID-19 pandemic, the period during the pandemic and the gradual economic rebound that followed. Using multiple linear regression analysis, the study assesses the direction and statistical relevance of each variable’s effect on the Indonesia Composite Index. The results suggest that Indonesia Overnight Index Average and Crude Oil WTI prices have a significant positive impact on the index, the Rupiah Exchange Rate has a significant negative impact on the index, while Gold and Coal Newcastle have no significant impact on the index. These findings can serve as a useful reference for both investors and policymakers in understanding and anticipating movements in Indonesia’s capital market, especially in relation to monetary policy and global commodity trends.

This study aims to analyze the reaction of the Indonesian capital market to the inauguration of President Prabowo-Gibran using the event study method. The important variables in this study are abnormal returns and trading volume activity, with the population of all companies listed in the LQ45 stock index. The observation period was 14 days. The data consists  of daily closing stock  price, daily closing price of LQ45 IHSG, daily trading volume, and the number of shares outstanding. Hypothesis testing was conducted using the non-parametric Wilcoxon Signed Rank Test, as the data is not normally distributed. The results showed that there was no significant difference in  the average abnormal return. However, a significant difference in the average trading volume activity was found between the periods before and after the presidential inauguration event.  

This study aims to analyze the effect of BI Rate, Rupiah exchange rate, and accounting profit on the Composite Stock Price Index (IHSG) in Indonesia. As one of the main indicators in the capital market, IHSG reflects the overall stock market performance and is influenced by various macro and micro economic factors. BI Rate as the reference interest rate, Rupiah exchange rate as an indicator of currency exchange rate, and accounting profit as a measure of company performance have high relevance to the movement of IHSG. This study uses a literature review method by referring to various previous studies that discuss the relationship between these variables. The results of the analysis show that the three variables have a significant influence on IHSG, both directly and indirectly. BI Rate and Rupiah exchange rate affect IHSG through financial market mechanisms, while accounting profit is more related to investment decisions and individual company performance. These findings provide insight for investors, policy makers, and academics to understand the dynamics of the relationship between economic indicators and stock market performance in Indonesia.

This study is to examine how interest rates and inflation affect the movement of the Indonesia Stock Exchange's Composite Stock Price Index (IHSG) (BEI). An econometric technique was utilized to do regression analysis on monthly data spanning the years 2015-2017. The study's findings demonstrate how the interest rate variable and the composite stock price index (IHSG) are influenced by the inflation variable, represented as variable X1.

Sumi Lala.202010325238. Portofolio Construction On The Indonesia Stock Exchange (BEI) Using The Markowitz method (Empirical Study Of Kompas 100 period December 2014 – September 2023). Investment development is currently very rapid. Ownership of 2 or more items can called a portofolio.Investments will experience increases and decreases in the portofolio. This research aims to understand the level of  return of portofolios formed through Markowitz and also a comparison between portfolios returm with market capitalization and weighting. The shares in the portfolio are shares listed on the Kompas 100 Index. This research uses end of month data for the period December 2014 to September 2023.The results of this research found that 61 shares included in the portolio did not have a negative weight.the next result of this research is that the market rate of return portolio (IHSG) Significantly influences the rate of return of the portfolio that has been formed based on market capitalization significantly 1% Other macro variables US Dollar exchange rate.Interest rates and oil prices do not significantly affect the rate of return portfolios formed based on Market Capitalization.

Penelitian ini menerapkan metode event study terhadap peristiwa penyerangan Rusia ke Ukraina, dengan fokus pada pembuktian empiris mengenai adanya kembalian tidak normal sekitar peristiwa tersebut, serta perbedaan kembalian tidak normal sebelum dan selama peristiwa. Riset ini bersifat sensus dengan melibatkan 45 saham yang tergabung di Indeks Liquid 45 sebagai populasi. Pengumpulan data dilakukan melalui sumber sekunder, di antaranya harga saham penutupan secara harian dan IHSG secara harian. Analisis data berbasis pendekatan statistika parametriks, yaitu uji-t satu sampel dan uji-t sampel berpasangan. Secara statistika, penelitian ini menemukan bukti mengenai adanya kembalian tidak normal, meskipun tidak signifikan, di seputar peristiwa penyerangan Rusia ke Ukraina. Selain itu, terdapat anomali yang tidak signifikan antara kembalian abnormal sebelum dan selama peristiwa tersebut. Kesimpulan dari riset ini adalah bahwa capital market Indonesia dikatakan sebagai market efisien semi kuat secara informasi. Temuan ini dapat menjadi acuan investor dalam pengalokasian dana, bertujuan memperoleh portofolio yang optimal.

This research was conducted to observe the effect of gold prices, world oil prices and palm oil prices as commodity prices on the movement of stock prices in Indonesia from 2019 to 2022. The research method used is a quantitative method, using secondary data. The analysis technique used is multiple linear regression analysis technique. The research data is in the form of time series data, namely monthly data from January 2019 to December 2022. The total data is 48 for each variable. The conclusion of this study is that the price of gold has no significant effect on the Jakarta Composite Index (IHSG). World oil prices have a significant effect on the Jakarta Composite Index (IHSG). The price of Palm Oil has a significant effect on the Jakarta Composite Index (IHSG). The results of this study are to prove that gold price movements cannot be used as an indication of stock prices on the Indonesia Stock Exchange (IDX). Movements in world oil prices and palm oil prices can indicate stock prices on the Indonesia Stock Exchange (IDX). The above conditions apply for the long term.

The joint stock price index (IHSG) as a benchmark for the progress of the capital market in Indonesia. The purpose of this study was to analyze the effect of Macro Variables on the Composite Stock Price Index (JCI) for the period 2010 to 2021. The macro variables used were Inflation, Economic Growth, Dollar Exchange Rate and SBI or 7 Day Repo Rate against the JCI. The number of years in the sample is 12 years, from 2010 to 2021. Multiple linear regression analysis, T test, F test, coefficient of determination test using SPSS Version 26 software. The conclusion is that gold price and Lq45 has  significant effect on the JCI, while the others macro variable, have no significant effect on the JCI. Simultaneously, all macro variables have a significant effect on the JCI.    

This article analyzes the movement of the Composite Stock Price Index (IHSG) in Indonesia during the Implementation of Restrictions on Community Activities (PPKM) in 2021. PPKM is a government regulation to deal with the Covid-19 pandemic. Before the implementation of PPKM, the government had implemented large-scale social restrictions implemented in several regions in Indonesia. The policy implemented by the government is considered to have an impact on the decline in people's purchasing power, which has just shown recovery and has an impact on several sectors of the stock market in Indonesia. It is necessary to analyze to determine the effect of implementing community activities on the joint-stock price index in 2021. This study uses an exploratory descriptive type of research. Observations were made by analyzing the composite stock price index (IHSG). Based on the results of the discussion that has been analyzed, it can be concluded that during the implementation of restrictions on community activities (PPKM) the IHSG value tends to experience a difference every month but shows a positive trend which closed at the level of 6,600.68, which was an increase of 10.4 percent compared to the 2020 closing position. which is at 5,979.07.