The Indonesia Stock Exchange introduced IDX Commodity 20, an index comprising 20 commodity producers and companies in the related supply chain. CNBC Indonesia reported that the index uses market-cap weighting adjusted for public float, with a maximum 15% weight for any single constituent. This approach is intended to prevent one stock from dominating the index.

The index calculation uses 1 September 2021 as its base date. Its announced constituent list applies from 30 October 2026 through February 2027. Major reviews are scheduled for February and August, while minor reviews take place in May and November.

Among the named constituents are AADI, ADMR, ADRO, AMMN, ANTM, ARCI, BRMS, BUMI, INCO, MBMA, MDKA, MEDC, PTRO, TINS and TPIA. The full list and weights may change during later reviews.

For investors, this thematic index can help track a group of commodity-related stocks, but membership does not mean every company has the same prospects or risk profile. Share prices remain exposed to commodity prices, company performance, debt, production costs, policy and market conditions. The index is not a recommendation to buy any particular stock.

Source: CNBC Indonesia, Mentari Puspadini, 30 October 2026. The information and constituent list refer to that report.