IDX Launches IDX Commodity 20 Index as a Benchmark for Commodity Stocks
JAKARTA — The Indonesia Stock Exchange (IDX) has launched a new index, the IDX Commodity 20 (IDXCMDTY20), which began being calculated and distributed on Friday (30 October 2026). The index can serve as a benchmark for investors and investment managers developing commodity-based investment strategies.
“The IDX Commodity 20 Index measures the price performance of 20 listed companies engaged in commodity production or operating in commodity industry supply chains. It covers energy, metals and minerals, chemicals, forestry, agriculture and plantations, livestock, as well as industries supporting commodity supply chains and downstream processing. Shares are selected for the index on the basis of high trading liquidity and free-float market capitalisation,” the IDX said in an official statement on Friday (30 October 2026).
The IDX said that to qualify for inclusion in the index, shares must have been listed on the exchange for at least six months and actively traded during the previous six months. They must also fall within the commodity-based industry classifications under the IDX Industrial Classification (IDXIC).
“Shares on the High Shareholding Concentration (HSC) list, carrying a special notation or included on the Special Monitoring Board during the previous six months do not meet the initial screening criteria,” it said.
From the shares that meet these requirements, the IDX selects the top 20 based on three factors: transaction value on the regular market over the previous six months, regular-market transaction frequency over the previous six months, and free-float market capitalisation over the same period.
The IDX Commodity 20 uses the Capped Adjusted Free Float Market Capitalisation Weighted method, which weights shares according to market capitalisation adjusted for the free-float ratio. To prevent any one share from dominating the index, the IDX has set a maximum weighting of 15 per cent for each share.
Weightings are adjusted during index reviews. The IDX Commodity 20 has been calculated retrospectively from its base date of 1 September 2021, with an initial value of 100.