JCI Surges 1.47% in First Session, Approaching 6,500 Level
The Jakarta Composite Index (JCI) strengthened by more than 1% in trading on Thursday (20/8/2026). The index’s gains were mainly supported by commodity and mining stocks.
Based on trading data at the end of the first session, the JCI stood at 6,487.96, up 93.83 points or 1.47%. The JCI opened at 6,447.25 and touched an intraday high of 6,493 and a low of 6,444.
Total transactions today reached Rp 7.98 trillion, involving 22.46 billion shares in 1.3 million trades. A total of 417 stocks rose, 187 fell and 185 others were unchanged.
By sector, basic materials posted the strongest gain of 4.22%, followed by utilities which rose 1.45% and energy 1.35%.
The basic materials sector’s rally was one of the main pillars of the JCI’s advance as a number of large-cap commodity stocks recorded gains.
In terms of contribution to the JCI, PT Amman Mineral Internasional Tbk (AMMN) was the largest contributor with around 14.37 points. PT Bumi Resources Minerals Tbk (BRMS) contributed 9.52 points and PT Bank Rakyat Indonesia (Persero) Tbk (BBRI) added 7.78 points.
Other mining stocks also supported the index, such as PT Bayan Resources Tbk (BYAN), PT Bumi Resources Tbk (BUMI), PT Merdeka Battery Materials Tbk (MBMA) and PT Merdeka Gold Resources Tbk (EMAS).
Today’s JCI trading is overshadowed by a number of domestic and global sentiments. Domestically, investors are digesting Bank Indonesia’s decision to hold the BI-Rate at 5.75% in the 18-19 August 2026 Board of Governors Meeting. BI also maintained the Deposit Facility rate at 5% and the Lending Facility rate at 6.5%. This policy is aimed at maintaining rupiah and inflation stability while supporting economic growth amid global uncertainty.
Externally, market sentiment received a boost from falling US Treasury yields and a weaker US dollar. Long-tenor Treasury yields eased after the US Treasury Department doubled its bond buyback programme to at least US$4 billion per operation. The US dollar index fell 0.84% to 98.83, potentially providing room for rupiah appreciation and reducing pressure on government bonds.
However, investors remain focused on the FOMC minutes which showed US inflation is still elevated. Several Fed officials even opened the door to rate hikes if inflation does not come down. This sentiment is important amid pressure from US President Donald Trump for the Fed to cut rates.
In commodity markets, oil prices strengthened again amid rising tensions in the Middle East. WTI rose 0.77% to US$85.59 per barrel and Brent gained 0.44% to US$91.42 per barrel.
In Asia, investors are awaiting Japan’s July trade balance data and China’s Loan Prime Rate decision. The market expects China’s 1-year LPR to remain at 3% and the 5-year LPR at 3.5%. Japan’s data is also in focus because strong imports and exports can provide a picture of regional demand conditions, including potential demand for Indonesian products.