Despite experiencing a weekly correction, the Jakarta Composite Index (IHSG) demonstrated remarkable resilience, achieving an All-Time High (ATH) at the beginning of the week. This fluctuating performance characterized the trading week from January 19-23, 2026, on the Indonesia Stock Exchange (IDX), as detailed by Kautsar Primadi Nurahmad, the IDX Corporate Secretary.
Nurahmad confirmed the varied trading data, noting, “The movement of the IHSG shifted this week, correcting by 1.37 percent to close at 8,951.010, down from its position of 9,075.406 last week,” as quoted on Saturday (January 24, 2026). While the index experienced an overall decline throughout the week, it had earlier soared to an unprecedented 9,134.7 on Tuesday, January 20, setting a new historical peak before retreating.
This weekly downturn in the IHSG was mirrored by a contraction in the IDX’s market capitalization. The total market value receded by 1.62 percent, settling at Rp16,244 trillion, a decrease from the previous week’s robust Rp16,512 trillion. This indicates a broader cooling in investor sentiment following the early-week surge.
Conversely, trading activity metrics showed a significant uptick in several key areas. The average daily transaction volume on the bourse witnessed its highest surge this week, climbing by an impressive 9.32 percent to 65.73 billion shares, up from 60.13 billion shares in the preceding week. Similarly, the average daily transaction value on the IDX also increased, rising by 3.59 percent to Rp33.85 trillion, compared to Rp32.67 trillion previously. However, not all indicators moved in unison; the average daily transaction frequency experienced a slight dip of 1.37 percent, settling at 3.75 million transactions from 3.86 million the week prior, suggesting larger individual trades.
Foreign investors demonstrated a mixed but ultimately tempered presence. On Friday, January 23, they recorded a net buy of Rp756 billion. Nevertheless, the cumulative year-to-date net buy for 2026 stood at Rp4.05 trillion, a figure that marks a notable decrease compared to the Rp7.3 trillion recorded by the end of the previous week. This suggests a significant net sell by foreign investors during the earlier part of the week, overshadowing the Friday influx and leading to an overall reduction in their cumulative net investment for the year thus far.