Business · Markets · 3 hrs ago
Indonesia to Exclude High-Concentration Shares From IHSG From November
The Indonesia Stock Exchange will exclude high-concentration shares from the IHSG, the country’s main stock index.
High shareholding concentration, or HSC, is the category the exchange uses for these shares.
The change takes effect on 2 November 2026, and extends an existing exclusion for shares on the Acceleration Board.
The exchange will continue to calculate the index using market value adjusted for free float, with each share capped at a 9% weight.
Index reviews will move to January, April, July and October, while changes to the index will take effect in February, May, August and November.
Shares that enter or leave the HSC category between review periods will be adjusted in the IHSG without waiting for the next review.
Indonesia’s stock exchange will exclude shares classified as having high shareholding concentration from the IHSG composite index starting 2 November 2026.
The change is set out in an exchange announcement on revised criteria for evaluating the index.
The exchange will continue using free-float-adjusted market capitalisation, with each share’s weight capped at 9%.
Index evaluations will move from March, June, September and December to January, April, July and October.
Changes to the index will take effect in February, May, August and November.
- Who
- The Indonesia Stock Exchange (BEI).
- What
- It will exclude shares classified as having high shareholding concentration from the IHSG.
- When
- The change takes effect on 2 November 2026.
- Where
- Indonesia.
- Why
- Not stated.
This story does not have two clearly opposing sides.
Detik reported the exchange’s announcement on revised IHSG evaluation criteria.
The exclusion of high-concentration shares from the IHSG is set to take effect.
- Effective date
- 2 November 2026
- Excluded shares
- Shares classified as having high shareholding concentration
- Index weighting method
- Free-float-adjusted market capitalisation, capped at 9%
- Evaluation months
- January, April, July and October
- Effective-change months
- February, May, August and November
What people are saying
All shares, except: (a) shares included in the Acceleration Board. (b) shares included in High Shareholding Concentration,
This adjustment will take effect on 2 November 2026.