The Jakarta Composite Index (IHSG) experienced a significant downturn during the trading week of May 18-22, 2026, closing sharply lower compared to the preceding week. Data from the Indonesia Stock Exchange (IDX) revealed that the benchmark index plummeted by 8.35 percent over the week, signaling a challenging period for the Indonesian equity market.
The IHSG closed the week at 6,162.04, a considerable correction from its previous week’s closing of 6,723.32. This sharp decline in the benchmark index was mirrored by a substantial decrease in the Indonesia Stock Exchange’s overall market capitalization, highlighting broad-based market weakness.
“The IDX’s market capitalization recorded a significant shift, dropping by 10.07 percent to Rp 10,635 trillion from Rp 11,825 trillion in the previous week,” an official statement from the IDX on Sunday, May 24, 2026, confirmed. This substantial reduction underscores the widespread impact of the week’s trading activity on investor wealth.
Despite the broad market decline, the average daily transaction value and volume on the Jakarta Composite Index showed an increase this week, indicating continued engagement even amidst volatility. Conversely, the average daily transaction frequency on the exchange saw a decrease compared to the prior week. The most notable rise was in the average daily transaction value, which surged by 15.68 percent, reaching Rp 21.77 trillion from Rp 18.82 trillion the week before, suggesting larger trades were executed.
This positive trend in activity was further reflected in the average daily transaction volume on the IDX, which climbed by 2.53 percent, moving from 35.76 billion shares to 36.67 billion shares. In contrast, the average daily transaction frequency experienced a 6.5 percent drop, declining to 2.37 million transactions from 2.53 million transactions recorded last week, implying fewer, but potentially larger, individual transactions.
Foreign investors, during the close of trading on Friday, May 22, 2026, posted a net sell value of Rp 309.52 billion. This trend of capital outflow extends throughout the year, as year-to-date in 2026, the cumulative net sell, or outflow, from foreign investors reached a substantial Rp 41.63 trillion, reflecting a cautious stance from international market participants.
Amidst the market fluctuations, the Indonesia Stock Exchange also saw the listing of two bonds and one sukuk during the week, indicating ongoing activity in the debt market. Specifically, the Sustainable Bond I TBS Energi Utama Phase III Year 2026, issued by PT TBS Energi Utama Tbk, commenced trading on the IDX on Monday, May 18, 2026, with a principal amount of Rp 175 billion.
Later in the week, on Friday, May 22, the IDX officially listed the Sustainable Ijarah Sukuk I Samudera Indonesia Phase III Year 2026, issued by PT Samudera Indonesia Tbk, alongside the Sustainable Bond I Energi Mega Persada Phase III Year 2026, issued by PT Energi Mega Persada Tbk. The sukuk was listed with a principal amount of Rp 700 billion, while the bond carried a principal amount of Rp 500 billion, diversifying the offerings on the exchange.
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Summary
The Jakarta Composite Index (IHSG) experienced a significant downturn from May 18-22, 2026, plummeting 8.35 percent to close at 6,162.04. This sharp decline was mirrored by a 10.07 percent decrease in the Indonesia Stock Exchange’s market capitalization, falling to Rp 10,635 trillion. Foreign investors posted a net sell of Rp 309.52 billion for the week, bringing the year-to-date outflow to Rp 41.63 trillion.
Despite the market’s weakness, the average daily transaction value increased by 15.68 percent to Rp 21.77 trillion, and transaction volume also rose by 2.53 percent. Conversely, the average daily transaction frequency decreased by 6.5 percent. The week also saw the listing of two new bonds and one sukuk from various issuers, signaling continued activity in the debt market.