Breaking: Jakarta Composite Index Plunges 1%
Jakarta, CNBC Indonesia — The Jakarta Composite Index (JCI) reversed course and weakened in mid-morning trading on Monday (12 October 2026), after opening in positive territory.
The index opened at 6,109.32 at 9am Jakarta time, above the previous close of 6,093.76. The gains were brief: after touching an intraday high of 6,128.72 early in the session, the JCI began to fall and moved into negative territory. Selling pressure continued until shortly before 10am.
After 10am, the index traded in a narrow range around 6,040. At 10.42am, the JCI stood at 6,032.32, down 61.44 points, or 1.01%, from the previous close. Its intraday low was 6,029.80.
The JCI subsequently pared its losses. At around 10.48am, it was at 6,044.67, down 49.09 points, or 0.81%. By then, trading volume had reached 138.54 million lots, with transactions worth around Rp3.74 trillion.
Global and Indonesian financial markets face a busy week, with several major events and economic data releases from China and the United States in focus.
The International Monetary Fund (IMF) meetings in Bangkok, Thailand, are among the key events. A number of senior officials are due to attend and deliver speeches, including Federal Reserve Chairman Kevin Warsh.
Wednesday is set to be particularly important, with inflation figures from the US and China and China’s trade balance due to be released.
Domestic market sentiment is relatively subdued, although political tensions could rise ahead of the second anniversary of the Prabowo-Gibran administration.
The following are some of the key market drivers for today and the week ahead:
- Trump weighs helping Saudi Arabia attack Houthis as Iran war widens
US President Donald Trump is considering helping Saudi Arabia attack Yemen’s Houthi group following a deadly strike at Riyadh airport. Such a move could draw the US into a new front in the war involving Iran.
“We might do it. We’ll consider it,” Trump told reporters at the White House on Saturday (10 October 2026), according to Reuters.
- IMF and World Bank meetings (12–18 October)
Global finance officials will gather in Bangkok, Thailand, for the annual meetings of the IMF and World Bank. The meetings are taking place amid geopolitical turmoil, surging energy costs, rising interest rates and mounting public debt.
Under the theme “Thailand’s New Horizons: Empowering People, Building Resilience”, discussions will cover the global economic outlook, financial stability, poverty reduction, job creation and the role of private investment in development.
- China inflation (Wednesday, 14 October)
China will release its consumer price index (CPI) and producer price index (PPI) figures for September 2026.
In August, Chinese consumer inflation reached 0.8% year on year, up from 0.5% in July. Producer inflation rose to 3.8% from 3.5%.
The latest figures will offer clues about the strength of domestic demand and cost pressures in the world’s second-largest economy. Developments matter to Indonesia because China is a major trading partner and an important market for Indonesian commodity exports.
- China’s trade balance (Wednesday, 14 October)
China will also announce its September 2026 trade figures. In August, the country recorded a trade surplus of US$119.09 billion.
Exports surged 25% year on year to US$401.44 billion, while imports grew 28.2% to US$282.36 billion.
Investors will watch to see whether the trade surge continues. Stronger Chinese imports could provide a boost to Indonesian exports, particularly if demand for commodities strengthens again.
- US inflation (Wednesday, 14 October)
The US September inflation data are among the releases most eagerly awaited by markets. The figures could provide clues about the Federal Reserve’s interest-rate policy.
In August, annual US inflation remained at 3.4%, while monthly inflation rose by 0.4%, driven mainly by petrol prices.
If price pressures rise again, the Fed’s scope to ease monetary policy could narrow. The effects could spill over into the US dollar, bond yields, the rupiah and emerging-market equities.
- Federal Reserve officials’ speeches (14–16 October)
Statements by Fed officials will also be in focus. Fed Vice Chair for Supervision Michelle W. Bowman is scheduled to attend an event in Bangkok on 14 October.
The following day, Fed Chairman Kevin Warsh is scheduled to take part in a discussion with IMF Managing Director Kristalina Georgieva.