JAKARTA. The Indonesian Stock Exchange (IDX) experienced a week of contrasting performance from May 25 to May 29, 2026. While the Composite Stock Price Index (IHSG) faced downward pressure, the market saw a notable surge in average daily transaction value, even as foreign investors continued to offload shares.
According to IDX data, the average daily transaction value jumped by 30.37% to reach Rp 28.38 trillion, up from Rp 21.77 trillion in the previous week. This surge in market activity helped drive the total IDX market capitalization up by 0.88%, rising to Rp 10,729 trillion from Rp 10,635 trillion.
Despite this growth in value and capitalization, the IHSG closed at 6,127.381, marking a 0.56% decline from the previous week’s closing level of 6,162.045.
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The broader market dynamics also showed signs of cooling. The average daily transaction frequency fell by 10.87%, dropping to 2.11 million trades compared to 2.37 million in the prior week. Similarly, the average daily transaction volume saw a contraction of 15.6%, slipping to 30.95 billion shares from 36.67 billion shares recorded previously.
Foreign investors maintained their bearish stance, contributing to significant selling pressure. On the final day of the period, foreign investors recorded a net sell of Rp 8.519 trillion. Cumulatively, total foreign net selling for 2026 has reached Rp 53.971 trillion.
Amidst these shifting market conditions, the IDX remains committed to strengthening the capital market through improved governance and transparency. On Tuesday, May 26, the exchange hosted a Strategic Leadership Dialogue in collaboration with the Financial Services Authority (OJK) and the Indonesian Institute of Accountants (IAI).
Focused on the theme “Sustainability Disclosure Standards (SPK) in Building Trust in the Indonesian Capital Market,” the forum aimed to help listed companies align their practices with global IFRS S1 and IFRS S2 standards. Participants emphasized that corporate directors must play a pivotal role in integrating sustainability into core business strategies and risk management frameworks.
To support this transition, the IDX continues to enhance its sustainability reporting infrastructure. Through platforms like SPE-IDXnet and the IDX Sustainability website, the exchange is working to provide investors with more transparent and high-quality Environmental, Social, and Governance (ESG) data.
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Summary
The Indonesian Stock Exchange (IDX) recorded a mixed performance between May 25 and May 29, 2026, as the Composite Stock Price Index (IHSG) fell by 0.56% to 6,127.38. Despite this decline and persistent net selling by foreign investors, the average daily transaction value surged by 30.37% to Rp 28.38 trillion, contributing to a 0.88% increase in total market capitalization. However, overall trading frequency and volume contracted during the same period.
In response to shifting market dynamics, the IDX collaborated with the OJK and IAI to promote sustainability through the adoption of global IFRS S1 and IFRS S2 standards. The exchange is actively enhancing its sustainability reporting infrastructure to provide investors with more transparent Environmental, Social, and Governance (ESG) data. These efforts aim to strengthen market trust and integrate sustainability into the long-term strategies of listed companies.