Flooring Guide by Cinvex — JAKARTA – Several major Indonesian conglomerate stocks are bracing for potential consecutive sessions of auto-rejection (ARB) as the market anticipates the upcoming MSCI rebalancing, effective May 29, 2026.
Fath Aliansyah, Head of Investment Specialist at Maybank Sekuritas, warns that the volume of sell orders for stocks removed from the MSCI index will be substantial on May 29. The ultimate fate of these equities will hinge on the market’s capacity to absorb the influx of shares following the rebalancing.
“If the market fails to absorb the selling pressure, these stocks risk hitting the lower auto-rejection limit and becoming locked. Historically, this trend tends to persist for several days following the effective date, meaning we could see continued volatility into the following Tuesday,” Fath explained during a Maybank Sekuritas Indonesia YouTube broadcast on Tuesday, May 26, 2026.
Conversely, if market demand proves sufficient to absorb the large volume of shares being offloaded, the selling pressure is expected to dissipate, potentially signaling that these stocks have entered a rebound phase.
The MSCI Rebalancing Impact
According to the latest review from MSCI Inc. for May 2026, six Indonesian stocks have been removed from the MSCI Global Standard Index, with no new local constituents added. The affected stocks include AMMN, BREN, TPIA, DSSA, and CUAN. All changes will take effect at the close of trading on May 29, 2026, and will be implemented starting June 1, 2026.
“If transactions on May 29 successfully absorb the sell-off despite the significant volume, we can conclude that the selling pressure on conglomerate stocks has concluded, which typically triggers a strong rebound,” Fath added.
Monitoring the Frontier Market Status
Beyond the MSCI rebalancing, investors are closely watching the status of Indonesia’s capital market. Fath highlighted two primary scenarios regarding the interim freeze on Indonesian stocks:
If the interim freeze is lifted, there is a strong possibility of an increase in the weighting of Indonesian stocks within the MSCI index. This move would likely trigger a rally in large-cap stocks, particularly in the banking sector, which carries the highest weighting in the MSCI Indonesia Index. “As long as the downgrade to Frontier Market is avoided, these two potential outcomes should act as a catalyst for blue-chip stocks, especially banks,” Fath noted.
A similar positive impact is expected for non-banking stocks listed in the MSCI Small Cap Index should the freeze be lifted. However, if the interim freeze remains in place throughout June, the impact on banking stocks is expected to be minimal, as there would be no changes to the Foreign Inclusion Factor (FIF) or free float metrics.
“Should the interim freeze be extended, we expect large-cap stocks like banks to remain stable, as there would be no changes regarding the FIF or free float issues. However, if the freeze is removed, it would serve as a broad positive for the entire market,” he concluded.
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Summary
Indonesian conglomerate stocks are bracing for potential consecutive auto-rejection (ARB) sessions due to the upcoming MSCI rebalancing, effective May 29, 2026. Significant sell orders are anticipated for six Indonesian stocks, including AMMN, BREN, TPIA, DSSA, and CUAN, which have been removed from the MSCI Global Standard Index, with no new local constituents added. The market’s capacity to absorb this influx of shares will determine whether these stocks rebound or experience continued volatility following the effective date.
Beyond the rebalancing, investors are closely watching the status of Indonesia’s capital market, specifically the interim freeze on Indonesian stocks. Should this freeze be lifted, an increase in the weighting of Indonesian stocks within the MSCI index is expected, likely triggering a rally in large-cap stocks, particularly in the banking sector. However, if the interim freeze remains, the impact on banking stocks is expected to be minimal, as there would be no changes to Foreign Inclusion Factor or free float metrics.