The Calculations on the Impact to the JCI if BREN and DSAA Are Booted from MSCI
MSCI, the global index provider, has just released an interim policy suspending the addition of weights and forcing the deletion of large-cap stocks with high shareholding concentration (High Shareholding Concentration / HSC) during the May 2026 review.
This decision is not a sudden step but part of a long-standing dynamic regarding Indonesia’s capital market accessibility and liquidity standards, which have been under scrutiny from global institutional investors since last year.
Roots of the Problem and the January 2026 Warning
Tensions between global index providers and the domestic market structure began to peak with MSCI’s review announcement in January 2026.
During that period, MSCI highlighted structural anomalies in the Indonesia Stock Exchange, where several new issuers recorded massive surges in market capitalisation, entering the top five ranks of the exchange.
The main issue lies in the actual very low level of publicly circulating shares (free-float), even though they administratively meet the minimum threshold.
This condition creates systemic risks for global passive investment managers. Since passive funds must replicate index weights without fundamental analysis, they are forced to buy these illiquid giant stocks at premium prices.
When the buying pressure from the index ends, the lack of liquidity in the regular market makes stock prices vulnerable to extreme volatility.
In January, MSCI implicitly issued a strong warning that if the investability or transaction ease issues are not resolved, Indonesia risks facing an aggregate index weight cut or even a downgrade from Emerging Market to Frontier Market status.
Response from Authorities and the Birth of the HSC Framework
Realising the significant risk of foreign capital flight if systemic sanctions are imposed, the Financial Services Authority (OJK) and the Indonesia Stock Exchange (BEI) responded swiftly from the first quarter of 2026 to the present.
The exchange authorities designed transparency reforms, including obligations to report ownership above 1% and a roadmap to increase the minimum free-float requirement to 15%. The most crucial step is the establishment of a monitoring board and a list of HSC stocks.
This tactical move by the exchange authorities is essentially an effort to isolate issuers deemed problematic by global standards so as not to harm the entire market.
By transparently marking stocks with narrow liquidity, BEI provides justification to MSCI to execute sanctions specifically on the related entities, while protecting fundamental index-supporting sectors like banking from overall country weight cuts.
Liquidity Rotation Impact Calculations at the 7,500 Level
MSCI’s decision to execute the deletion of HSC issuers in May will trigger a measured foreign portfolio restructuring. The removal of stocks like BREN and DSAA is projected to force passive funds to liquidate around Rp25.5 trillion.
With the JCI currently at the 7,500 level, the absence of buyers in the negotiation market could force significant price corrections in both stocks to find a new equilibrium point.
Based on the factual weight of the two issuers reaching 5.91%, an extreme correction in those stocks could potentially impose a downward drag (index drag) of around 2.95% on the composite index.
However, the Rp25.5 trillion in funds will not leave the exchange system. According to the rebalancing mechanism, this liquidity will be reallocated proportionally to the remaining 15 MSCI constituent stocks, with the banking sector as the main recipient.
This incoming fund is estimated to provide an appreciation boost (index boost) of around 0.81%. Cumulatively, the net impact of this rotation will press the JCI down by 2.14%.
In absolute calculations from a base of 7,500, the index is projected to correct by around 160 points towards an equilibrium area in the range of 7,340 during the rebalancing execution period.
Long-Term Market Accessibility Prospects
MSCI’s interim policy, which temporarily freezes weight adjustments (Foreign Inclusion Factor) and blocks new issuers from entering the index, serves as a trial period for the domestic exchange.
MSCI will still evaluate whether the 1% shareholder data and new BEI rules truly effectively reflect real liquidity before making a final decision in the Market Accessibility Review in June 2026.
Although the portfolio cleaning process in May will trigger volatility and short-term index corrections, these structural reforms are ultimately expected to strengthen Indonesia’s capital market by redirecting foreign capital flows to issuers with transparent liquidity governance for global investors, who are the dominant drivers of index rises in the domestic market.