ASEAN Stocks: VN-Index, JCI, SET, PSEi and KLCI — 2026-09-15
ASEAN markets faced renewed volatility this week as Vietnam’s VN-Index breached the psychological 1,800-point threshold despite an imminent FTSE Russell upgrade, while Indonesia’s JCI suffered significant foreign outflows driven by mining sector weakness. In Thailand, the SET Index declined on selling pressure in technology stocks ahead of the US Federal Reserve meeting, mirroring broader regional caution.
ASEAN Stocks: VN-Index, JCI, SET, PSEi and KLCI — 2026-09-15
Top developments
Vietnam’s VN-Index Breaks 1,800 Support Amid Pre-Upgrade Volatility
On September 14, the VN-Index closed at 1,788.23 points, dropping 6.98 points (-0.39%) as it continued its downward trend from earlier in the week. This marks a significant psychological breach, with the index losing nearly 58 points over the past week due to heavy selling pressure. The decline occurred despite foreign investors reversing course to net buy VND 812 billion on September 14, after previous days of heavy selling. Analysts note that the market is experiencing "profit-taking" and caution ahead of the official FTSE Russell reclassification effective September 21, with the index struggling to maintain momentum above key support levels.
Indonesia’s JCI Slides as Foreigners Dump Mining Shares
The Jakarta Composite Index (JCI/IHSG) fell 1.70% to 6,429 points in the first session of Monday, September 14, pressured by a sharp drop in mining stocks. Foreign investors recorded a net sell of IDR 664.34 billion during that session, targeting major names like BUMI, ANTM, and BMRI. For the week of September 7–11, total foreign outflows reached IDR 3.36 trillion (approx. USD 191.3 million), reflecting broader global risk-off sentiment and geopolitical tensions in the Middle East. However, on September 14, there was a slight shift with some foreign buying in PT Amman Mineral (AMMN) amid cabinet reshuffle news, though the index remained volatile.
Thailand’s SET Falls on Tech Sell-off Ahead of Fed Decision
The SET Index closed at 1,591.07 points on September 14, down 13.45 points (-0.84%) with a trading value of THB 61.89 billion. The decline was primarily driven by selling pressure in DELTA and other electronics shares, following a global downtrend in the technology sector. Foreign investors were net sellers in the SET+MAI combined market, with foreign net selling recorded at 47.22 million baht for the day. Market sentiment is currently in "wait-and-see" mode as investors anticipate the upcoming US Federal Reserve meeting, with analysts suggesting support levels around 1,584–1,573 points.
Local view
In Vietnam, local media such as Nhandan and Dantri highlight the disconnect between the upcoming FTSE Russell upgrade and current market performance, noting that foreign investors have net sold over VND 90 trillion recently, raising questions about the immediate impact of the reclassification. Vietnamese analysts suggest the market is consolidating and that demand is gradually returning as the index tests support zones.
In Indonesia, CNBC Indonesia reports that while foreign outflows are dominant, specific sectors like mining saw mixed activity, with some stocks like AMMN attracting foreign interest even as the broader index fell. Thai media Kaohoon emphasizes the impact of DELTA’s weight on the index, noting that the stock’s movement disproportionately affects the SET’s daily close.
Context & numbers
- Vietnam (VN-Index): Closed at 1,788.23 on Sept 14 (-6.98 pts). Weekly loss approx. 58 pts. Foreign net buy on Sept 14: VND 812 billion.
- Indonesia (JCI): Closed down 1.70% to 6,429 in Session 1 on Sept 14. Weekly foreign net sell (Sept 7–11): IDR 3.36 trillion.
- Thailand (SET): Closed at 1,591.07 on Sept 14 (-13.45 pts). Trading value: THB 61.89 billion.
- Philippines (PSEi): Data for the specific week of Sept 8–14 was not available in recent sources; last verified close was Sept 3 at 6,069.42 (+0.27%).
- Malaysia (KLCI): No specific daily close data for the past 7 days available in provided sources.
On the radar
- FTSE Russell Reclassification: Vietnam will officially move from Frontier to Secondary Emerging Market status on September 21, 2026, which may trigger further passive fund inflows or profit-taking depending on market positioning.
- US Federal Reserve Meeting: Regional markets, particularly Thailand and Vietnam, are sensitive to US monetary policy signals expected from the upcoming Fed meeting, influencing foreign flow dynamics.
- Geopolitical Tensions: Ongoing hostilities in the Middle East continue to weigh on investor sentiment across Asia-Pacific, contributing to volatility in energy and mining sectors.
This content was collected, curated, and summarized entirely by AI — including how and what to gather. It may contain inaccuracies. Crew does not guarantee the accuracy of any information presented here. Always verify facts on your own before acting on them. Crew assumes no legal liability for any consequences arising from reliance on this content.
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