JCI Plummets 4.30 Per Cent in 1.5 Hours, Market Braces for Trading Halt
JAKARTA — The Indonesia Composite Index (JCI) plummeted by more than 4 per cent during approximately 1.5 hours of trading on Monday (18/05/2026), approaching the threshold for a temporary trading halt by the Indonesia Stock Exchange (IDX).
According to IDX data as of 10:54 WIB, the JCI stood at 6,434.28, representing a decline of 289.04 points or 4.30 per cent. The index opened at 6,628.98 and briefly touched a high of 6,631.28, while its lowest point was recorded at 6,425.95.
Selling pressure in the stock market appeared increasingly dominant from the start of trading. Transaction volume reached 16.18 billion shares with a transaction value of Rp 9.538 trillion, and trading frequency reached 1.405 million transactions.
All stock sectors moved into the red zone. The deepest decline occurred in the basic materials sector, which fell by approximately 9 per cent. Additionally, the energy, industrial, consumer staples, financial, infrastructure, and transportation sectors all recorded losses of more than 4 per cent.
Most major stock indices also corrected downwards. The LQ45 index fell 3.39 per cent to 635.59, while the KOMPAS100 index weakened by 4.40 per cent to 853.95. Declines were also observed in Sharia-compliant indices such as JII and ISSI.
The sharp decline in the JCI has led the market to highlight the potential implementation of a trading halt by the IDX. A trading halt is a policy to temporarily suspend stock trading when the JCI falls to a certain limit within a single trading day. This policy is implemented to maintain market stability, protect investors, and ensure all market participants have fair access to information amidst high volatility.
According to current regulations, a trading halt is triggered if the JCI falls by more than 5 per cent in one trading day. The pressure on the JCI was triggered by the collapse of several large-cap stocks, particularly those previously affected by global index adjustments. Stocks experiencing significant pressure include PT Chandra Asri Pacific Tbk (TPIA), PT Dian Swastatika Sentosa Tbk (DSSA), PT Amman Mineral Internasional Tbk (AMMN), and PT Barito Renewables Energy Tbk (BREN).