Indonesia’s IDX Composite Falls 0.93% as Financials and Agriculture Weigh

Indonesia stocks finished lower on Tuesday, September 15, 2026, with the IDX Composite Index declining 0.93% as losses in the Financials, Agriculture and Basic Industry sectors weighed on the market. Declining stocks outnumbered advancers, while foreign selling in banking heavyweights and rising global oil prices added pressure, as reported by market data sources.

IDX Composite Falls 0.93% as 372 Stocks Decline; DEFI Surges 35% While SAPX Drops 15%

At the close in Jakarta, the IDX Composite Index fell 0.93%. The session saw 372 stocks decline, 310 advance and 148 end unchanged.

The best performers included Danasupra Erapacific Tbk (DEFI), which surged 34.95% or 36 points to 139.00; Transkon Jaya Pt (TRJA), up 28.69% or 35 points to 157.00; and Communication Cable Systems Indonesia Tbk PT (CCSI), which rose 24.86% or 88 points to 442.00 and hit a 52-week high.

The worst performers were Satria Antaran Prima Tbk PT (SAPX), down 14.85% or 75 points to 430.00; Rig Tenders Tbk (RIGS), which fell 11.51% or 80 points to 615.00 and reached a 52-week low; and Multi Garam Utama Tbk PT (FOLK), down 10.81% or 32 points to 264.00.

In commodities, October crude oil rose 1.92% or $1.95 to $103.34 a barrel, while November Brent climbed 1.82% or $1.92 to $107.60. December gold futures declined 0.87% or $38.00 to $4,313.90 a troy ounce.

Foreign Selling Hits Banks as Oil Tops $100 and New Finance Minister Euphoria Fades

Selling pressure was concentrated in Financials, which recorded some of the steepest sector declines, alongside Agriculture and Basic Industry. Banking stocks such as BBRI and BMRI faced notable pressure amid net foreign selling.

The initial positive reaction to the appointment of Suahasil Nazara as Finance Minister faded quickly. Broader caution stemmed from elevated oil prices above $100 a barrel, expectations surrounding the U.S. Federal Reserve’s policy decision, and ongoing geopolitical tensions that fueled inflation concerns.

IDX Composite Down ~18% From 52-Week High Near 9,174 as Rupiah Holds Near 17,700

The IDX Composite has faced repeated sessions of weakness in recent weeks, with the index trading well below its 52-week high near 9,174 and reflecting year-to-date and annual declines of around 18%. The rupiah traded near 17,680–17,700 per U.S. dollar.

Market participants remain focused on domestic fiscal policy continuity under the new finance minister and external factors, including higher energy costs and global monetary policy signals, which have limited risk appetite in emerging Asian markets.

Fed Decision and New Finance Minister’s Fiscal Stance in Focus as IDX Eyes Support Near Recent Lows

Investors will closely monitor the U.S. Federal Reserve’s upcoming decision and any further statements on fiscal direction from the new Indonesian Finance Minister. Key support levels for the IDX Composite remain under watch near recent lows, while trading volumes and foreign fund flows in banking and commodity-related stocks will provide near-term direction cues.