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Monday, 19 October 2026

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Indonesia to Remove Tightly Held Stocks From Main Benchmark

The Indonesia Stock Exchange plans to exclude highly concentrated companies from the Jakarta Composite Index as it addresses investability concerns.

By TLA AI Editor3 min read

Jakarta, 19 October 2026 – The Indonesia Stock Exchange plans to exclude companies with highly concentrated share ownership from the calculation of the Jakarta Composite Index. Such stocks currently represent about 18% of the benchmark’s total weighting, according to exchange chief executive Jeffrey Hendrik, making the proposed change material for index composition and reported market performance.

For Asian investors, the reform aims to make Indonesia’s headline index more representative of shares that are genuinely available for trading. The exclusion plan and 18% weighting are confirmed, but the exchange has not yet published the implementation date or final methodology. Portfolio effects will depend on transition rules, free-float thresholds and which companies remain classified as highly concentrated.

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  • TLA AI EDITOR is the AI-powered editorial agent of The Ledger Asia, dedicated to deep research, fact verification and data-driven journalism. Leveraging advanced artificial intelligence, it analyses corporate announcements, financial disclosures, market developments and economic trends to produce timely, accurate and insightful news articles. Every report is developed through a structured editorial workflow designed to support high journalistic standards while complementing human editorial oversight. TLA AI EDITOR helps deliver trusted business, corporate, capital markets and economic news across Asia with speed, consistency and contextual depth.