The Indonesia Stock Exchange (IDX) has officially announced its periodic rebalancing of several key stock indices, effective from May 4 to July 31, 2026. This comprehensive adjustment affects major benchmarks including the LQ45, IDX30, and IDX80, as well as thematic indices like the IDXESGL, all of which serve as vital indicators for market participants.
In the highly liquid LQ45 index, the exchange has introduced five new constituents. Notable additions include PT Petrindo Jaya Kreasi Tbk (CUAN), linked to national conglomerate Prajogo Pangestu, and PT Solusi Sinergi Digital Tbk (WIFI), which is affiliated with Hashim Djojohadikusumo, the younger brother of President Prabowo Subianto. Joining them are PT Darma Henwa Tbk (DEWA), PT ESSA Industries Indonesia Tbk (ESSA), and PT Hartadinata Abadi Tbk (HRTA).
Conversely, several companies have been removed from the LQ45, most notably another of Prajogo Pangestu’s firms, PT Barito Renewables Energy Tbk (BREN). Other departures include PT Ciputra Development Tbk (CTRA), PT Dian Swastatika Sentosa Tbk (DSSA), PT Medikaloka Hermina Tbk (HEAL), and PT Trimegah Bangun Persada Tbk (NCKL).
For the IDX30 index, the transition involves a single change: PT Adaro Minerals Indonesia Tbk (ADMR) has been added, while PT Indosat Tbk (ISAT) has been dropped.
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The rebalancing extends to the IDX80 index, which welcomes PT Sentul City Tbk (BKSL), PT Bangun Kosambi Sukses Tbk (CBDK), PT Gudang Garam Tbk (GGRM), PT Chandra Asri Pacific Tbk (TPIA), and DEWA. Stocks exiting the index include PT Bank BTPN Syariah Tbk (BTPS), PT Dayamitra Telekomunikasi Tbk (MTEL), BREN, DSSA, and NCKL.
Other indices also saw significant activity. In the Bisnis-27 index, PT AKR Corporindo Tbk (AKRA) and PT Bumi Resources Minerals Tbk (BRMS) have joined, while ADMR and PT Barito Pacific Tbk (BRPT) have departed. Meanwhile, the MNC36 index added mining heavyweights PT Bumi Resources Tbk (BUMI) and PT Bukit Asam Tbk (PTBA), while removing BRPT, CTRA, and HEAL.
Below is the full list of index changes effective for the May 4 – July 31, 2026 period:
LQ45 Index
Additions: CUAN, DEWA, ESSA, HRTA, WIFI.
Removals: BREN, CTRA, DSSA, HEAL, NCKL.
IDX30 Index
Additions: ADMR.
Removals: ISAT.
IDX80 Index
Additions: BKSL, CBDK, DEWA, GGRM, TPIA.
Removals: BREN, BTPS, DSSA, MTEL, NCKL.
Bisnis-27 Index
Additions: AKRA, BRMS, CPIN, DEWA, ICBP, MBMA, PGAS, TAPG.
Removals: ADMR, BRPT, DSNG, HEAL, INDF, MYOR, NCKL, PGEO.
MNC36 Index
Additions: BUMI, CPIN, PTBA, SILO.
Removals: BRPT, CTRA, HEAL, PGAS.
SMINFRA18 Index
Additions: ELSA, MIKA, WIFI.
Removals: EXCL, MTEL, PTPP.
IDXESGL Index
Additions: BRPT, INCO, KPIG, TPIA.
Removals: AKRA, AVIA, MTEL, PGAS.
The IDX has also updated its regulatory framework for these indices. Starting May 4, 2026, stocks classified with High Share Concentration (HSC)—where a significant portion of shares are held by a limited group—are now excluded from the LQ45, IDX30, and IDX80 indices. Additionally, the minimum free float requirement has been tightened to a minimum of 10%, aligning with regulation I-A.
Furthermore, the exchange has relaxed its trading suspension criteria. Previously, stocks were required to be active for the entire preceding six-month period; under the new rules, a tolerance of up to one day of inactivity is permitted within that timeframe. These measures, developed in collaboration with the Indonesian Central Securities Depository (KSEI), aim to bolster transparency and mitigate risk within the market.
Summary
The Indonesia Stock Exchange (IDX) has announced a periodic rebalancing of major indices, including the LQ45, IDX30, and IDX80, effective from May 4 to July 31, 2026. Key changes to the LQ45 include the addition of five companies, such as CUAN and WIFI, while notable stocks like BREN and CTRA were removed. Similar adjustments were applied across other benchmarks, including the IDXESGL, Bisnis-27, and MNC36 indices.
In addition to the constituent changes, the IDX implemented new regulatory requirements, such as the exclusion of stocks with High Share Concentration and a mandated minimum free float of 10%. The exchange also updated its trading suspension criteria, now allowing a one-day inactivity tolerance for listed companies. These updates, developed with the Indonesian Central Securities Depository, are designed to enhance market transparency and risk mitigation.