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Somewhat Bearish -40

IDX Composite index falls further at open

- 📉 The Indonesia Stock Exchange (IDX) Composite index plunged as the market opened on Monday, extending its downward trend following recent MSCI rebalancing announcements.

- 📊 At open, the index dropped 1.4 percent to 6,447.97 points, with the decline deepening to 4.4 percent ahead of the midday trading break.

- 📉 In the first session, 736 stocks declined compared to only 70 that advanced and 153 that remained unchanged.

- ⚠️ PT Dian Swastika Sentosa emerged as a major laggard after being removed from the MSCI Global Standard Index in the latest review.

- 🗓️ MSCI announced its rebalancing review on May 12, with constituent changes scheduled to take effect on June 1.

- ❌ No Indonesian stocks were added to MSCI indices during this review, resulting in a net outflow of exposure for local equities.

- 🔙 Three Barito Pacific-affiliated companies—PT Barito Renewables Energy, PT Chandra Asri Pacific, and PT Petrindo Jaya Kreasi—were removed from the index.

- 🏢 PT Amman Mineral International and Dian Swastika Sentosa were also removed, with the latter being part of the Sinar Mas Group.

- 🛒 PT Sumber Alfaria Trijaya was downgraded to the Global Small Cap Index, triggering the removal of 13 Indonesian stocks from its previous category.

- 📉 Since the beginning of the year, the benchmark index has declined by more than 26 percent, compounding pressure on investors.

- 👇 The article notes that MSCI will extend its final call on Indonesian equities to a June review amid continued market volatility.

Bullish Signals
  • MSCI extended its final call on Indonesian equities to a June review following investor concerns over recent removals.
  • The Indonesia Stock Exchange (IDX) and the Financial Services Authority (OJK) have analyzed how to restore investor confidence ahead of the upcoming MSCI evaluation.
  • Indonesia has completed stock market reforms in February following previous selloffs, signaling a renewed focus on regulatory improvement.
Risk Factors
  • The Indonesia Stock Exchange (IDX) Composite index plunged more than 26 percent since the beginning of the year amid growing concerns.
  • The benchmark index fell further at the open on Monday, dropping 1.4 percent initially and deepening to a 4.4 percent decline ahead of the midday trading break following MSCI rebalancing news.
  • A total of 736 stocks were down during the first trading session compared to only 70 that advanced, indicating widespread market weakness.
  • Key heavyweight stocks were removed from the MSCI Global Standard Index, specifically PT Dian Swastika Sentosa (mining arm of Sinar Mas Group), PT Barito Renewables Energy, and others affiliated with Barito Pacific.
  • PT Sumber Alfaria Trijaya was downgraded to the Global Small Cap Index, which resulted in a removal of 13 Indonesian stocks from MSCI's index altogether.
  • MSCI announced its rebalancing review on May 12 with changes taking effect on June 1, triggering immediate negative market sentiment.
Full Analysis
The Indonesia Stock Exchange (IDX) Composite index fell sharply at the open of Monday trading on May 18, 2026, continuing a downward trend following an announcement from MSCI regarding its Global Standard Index rebalancing. The index opened down 1.4 percent at 6,447.97 and dropped further to 4.4 percent before the midday break, with 736 stocks declining compared to only 70 that advanced. This significant market reaction is directly attributed to MSCI's recent review results, which included removing several major Indonesian companies from the Global Standard Index effective June 1 after changes implemented following close on May 29. The index has now lost more than 26 percent of its value since the start of the year, exacerbating concerns among investors regarding market stability and reform efforts completed in February. The rebalancing review announced by MSCI on the evening of May 12 excluded any new Indonesian stocks but resulted in the removal of five notable entities from the flagship index. These removed companies include PT Barito Renewables Energy, PT Chandra Asri Pacific, PT Petrindo Jaya Kreasi, and two other firms affiliated with local conglomerate Barito Pacific, alongside PT Amman Mineral International and PT Dian Swastika Sentosa, which is described as a heavyweight mining arm of Sinar Mas Group. Additionally, consumer goods retailer PT Sumber Alfaria Trijaya was downgraded to the Global Small Cap Index, triggering the removal of 13 Indonesian stocks from that tier altogether. These exclusions are particularly damaging given that PT Dian Swastika Sentosa and Barito Pacific-related firms were among the top contributors to market volume before their removal. The article highlights the broader context of these changes affecting the Indonesian stock market, noting that the benchmark index's decline reflects a challenging environment exacerbated by factors such as a weakening rupiah and global economic shifts including China's economy losing steam in early Q2. The Jakarta Post analysis suggests that while Indonesia has completed its stock market reform drive following sell-offs in February, the removal of key companies by MSCI poses a significant challenge to restoring investor confidence. This situation underscores the volatility facing Indonesian equities as international index providers adjust their portfolios, directly impacting major local conglomerates and potentially influencing foreign investment flows into the region.