Jakarta, 21 October 2026 – The Jakarta Composite Index rebounded about 3.2% on Wednesday after the Indonesia Stock Exchange said companies with highly concentrated ownership would be excluded from benchmark calculations. The move followed a two-day fall of roughly 15%, the market’s steepest such decline since 1989, amid concerns raised by MSCI.
The response matters to investors because index eligibility affects passive flows, liquidity and Indonesia’s standing in global portfolios. The exchange’s proposal addresses concentration in benchmark calculations, but it does not guarantee that MSCI will retain the country’s classification or reverse all methodological concerns.
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