JCI Plunges 1.18% in First Session, Dragged Down by Banking and Commodity Stocks
The Jakarta Composite Index (IHSG) closed sharply lower in the first trading session on Thursday (13/8/2026). Market pressure continued after the results of the MSCI August 2026 Index Review were announced in the early hours of the morning.
Based on data from the Indonesia Stock Exchange, the IHSG at the midday break stood at 6,298.34, plunging 75.51 points or 1.18% from the previous closing position of 6,373.85.
The IHSG had opened higher at 6,388.23 and touched a high of 6,390.33. However, the index then reversed direction and hit a low of 6,281.57 before slightly trimming its losses.
Selling pressure was fairly broad-based across the market. A total of 182 stocks rose, 456 stocks fell, and 325 stocks were unchanged.
Share transaction value in the first session reached Rp7.80 trillion, with trading volume of 16.44 billion shares and frequency reaching 1.17 million transactions.
From a sectoral perspective, all major sectors were in the red, except for the technology sector which was relatively stable. The healthcare sector posted the deepest decline at 2.72%, followed by the raw materials sector which fell 2.45%.
The financial sector corrected 1.03%, energy weakened 0.99%, industrials fell 0.75%, non-primary consumer goods corrected 0.80%, property declined 0.66%, and utilities weakened 0.82%. Meanwhile, the technology sector slipped only 0.05%.
Among large-capitalisation stocks, PT Bank Central Asia Tbk (BBCA) was one of the main drags on the IHSG, contributing approximately 9.97 index points to the decline. BBCA shares stood at Rp6,275, down 1.57%.
Besides BBCA, pressure also came from PT Barito Pacific Tbk (BRPT) which contributed a decline of 5.25 points, PT Sinar Mas Multiartha Tbk (SMMA) 5.15 points, PT Amman Mineral Internasional Tbk (AMMN) 3.81 points, and PT Saratoga Investama Sedaya Tbk (SRTG) 2.94 points.
Shares of PT Bank Mandiri (Persero) Tbk (BMRI) also weighed on the index with a negative contribution of 2.77 points, standing at Rp4,110.
Conversely, a number of stocks were still able to cushion the IHSG’s decline. PT Bank Negara Indonesia (Persero) Tbk (BBNI) was the largest positive contributor with 0.75 points, followed by XLSMART Telecom Sejahtera with 0.58 points, PT Energi Mega Persada Tbk (ENRG) 0.58 points, PT Gudang Garam Tbk (GGRM) 0.55 points, and PT Mora Telematika Indonesia Tbk (MORA) 0.52 points.
The pressure on the IHSG came after MSCI announced the results of its August review. In that decision, no Indonesian stocks were added to the MSCI Global Standard Indexes.
Instead, GOTO was removed from the MSCI Indonesia Investable Market Index, while CPIN was downgraded from Global Standard to Global Small Cap. Nine other stocks were also removed from the MSCI Global Small Cap Indexes.
However, these changes only take effect after the close of trading on 31 August 2026. This means that the pressure in today’s trading cannot yet be fully attributed to actual rebalancing fund flows, but the market has begun to respond to the MSCI decision and is anticipating portfolio adjustments ahead of the effective date.