Indonesia has more Muslims than any other country on earth. Roughly 240 million of the country's 275 million people practice Islam, which is about 12 percent of the global Muslim population in a single nation. You would expect a country of that scale and religious composition to have a massive halal investing industry. The reality is more complicated.

Indonesia's stock market, the Indonesia Stock Exchange (IDX), hosts roughly 850 listed companies with a combined market cap around 12,800 trillion rupiah, which is about 790 billion dollars as of early April 2026. Of those listings, approximately 480 are classified as Shariah-compliant under the ISSI, the Indonesia Sharia Stock Index. The IDX publishes the ISSI alongside two narrower indexes, the JII (Jakarta Islamic Index) of 30 large-cap compliant names and the JII70 of 70 more liquid compliant names.

The screening methodology used by the Indonesian Financial Services Authority (OJK) is adapted from global standards but has some local wrinkles. Debt to total assets must be less than 45 percent, which is more permissive than the 33 percent AAOIFI threshold. Non-compliant income must be less than 10 percent of total revenue, also more permissive. That means some Indonesian stocks classified as compliant locally would fail stricter AAOIFI or MSCI screens.

For international investors using a stricter standard, the effective Indonesian halal universe is smaller than the 480 stocks in the ISSI. Let me walk through the names that clear both domestic and international screens.

Banking

Indonesia's conventional banks dominate the IDX by market cap. Bank Central Asia (BBCA.JK) is the largest at around 1,350 trillion rupiah market cap, which is about 83 billion dollars. It is a conventional bank with the largest retail banking franchise in the country, and it fails Shariah screens because more than 5 percent of revenue comes from interest-bearing activities.

Bank Mandiri (BMRI.JK), Bank Rakyat Indonesia (BBRI.JK), and Bank Negara Indonesia (BBNI.JK) are the state-owned banks. All three are conventional and fail Shariah screens.

Bank Syariah Indonesia (BRIS.JK) is the only major pure Islamic bank on the IDX. It was formed in 2021 through the merger of the Islamic banking subsidiaries of the three big state banks (BRI Syariah, BNI Syariah, and Mandiri Syariah). Market cap around 140 trillion rupiah. It is the largest Islamic bank in Indonesia and one of the top ten in the world. Return on equity around 17 percent. Fully Shariah-compliant.

Bank Syariah Indonesia is the anchor holding for any halal Indonesian portfolio. It represents the majority of the country's formal Islamic banking exposure and has grown its assets at roughly double-digit annual rates since the merger.

Bank Muamalat Indonesia was the first Islamic bank in the country, founded in 1991, but it is not listed on the IDX. It is privately held through a consortium.

Telecommunications

Telkom Indonesia (TLKM.JK) is the incumbent telecom operator. Market cap around 310 trillion rupiah. Dividend yield near 5 percent. The company is included in the ISSI but check ratios quarterly because its debt-to-assets has sometimes flirted with the 33 percent threshold used by stricter international screens.

Indosat Ooredoo Hutchison (ISAT.JK) is the second-largest telecom after the merger of Indosat and Hutchison 3. Market cap around 85 trillion rupiah. Compliant under ISSI and also typically compliant under stricter screens.

XL Axiata (EXCL.JK) is the third telecom. Market cap around 40 trillion rupiah. Shariah profile is borderline because its debt ratio has historically sat near the threshold.

Consumer

Unilever Indonesia (UNVR.JK) is the local subsidiary of the Anglo-Dutch consumer giant. Market cap around 125 trillion rupiah. It is classified as Shariah-compliant by the OJK but investors should note that the local entity sells some products that would raise concerns under stricter global standards.

Indofood CBP Sukses Makmur (ICBP.JK) is the packaged food giant that makes Indomie noodles, one of the most recognized food brands globally. Market cap around 130 trillion rupiah. Compliant.

Indofood Sukses Makmur (INDF.JK), the parent company of ICBP, is also listed separately. Market cap around 65 trillion rupiah. Compliant.

Mayora Indah (MYOR.JK) is another food manufacturer. Market cap around 65 trillion rupiah. Compliant.

Gudang Garam (GGRM.JK) and Sampoerna (HMSP.JK) are the tobacco giants. Tobacco is a gray area under Shariah screens. Some scholars consider it makruh (disliked) rather than non-compliant. The OJK classifies these as compliant because they pass the financial ratio screens. Stricter international methodologies like AAOIFI and Dow Jones Islamic exclude tobacco outright. If you follow stricter standards, both names are out.

Mining and materials

Aneka Tambang, Antam (ANTM.JK), is the state-owned gold and nickel miner. Market cap around 40 trillion rupiah. Compliant.

Vale Indonesia (INCO.JK) is the Indonesian nickel subsidiary of the Brazilian parent. Market cap around 60 trillion rupiah. Compliant.

Bukit Asam (PTBA.JK) is a state-owned coal producer. Market cap around 30 trillion rupiah. Compliant under most screens.

Adaro Energy (ADRO.JK) is the largest private coal producer. Market cap around 90 trillion rupiah. Compliant.

Indo Tambangraya Megah (ITMG.JK) is another major coal miner. Smaller market cap but often one of the highest dividend payers on the exchange. Compliant.

Coal has become a controversial topic in ESG investing broadly, but it is permissible under Shariah screens which do not apply environmental criteria beyond the business activity screen.

Real estate and infrastructure

Pakuwon Jati (PWON.JK) is one of the largest commercial property developers, running shopping malls and office buildings across Indonesia. Market cap around 25 trillion rupiah. Compliant.

Summarecon Agung (SMRA.JK) is a township developer. Market cap around 10 trillion rupiah. Compliant.

Jasa Marga (JSMR.JK) operates toll roads. Market cap around 35 trillion rupiah. Compliant.

A practical halal IDX portfolio

The core halal names to consider are:

Bank Syariah Indonesia (BRIS.JK)
Telkom Indonesia (TLKM.JK)
Indosat Ooredoo Hutchison (ISAT.JK)
Indofood CBP (ICBP.JK)
Unilever Indonesia (UNVR.JK)
Antam (ANTM.JK)
Adaro Energy (ADRO.JK)
Vale Indonesia (INCO.JK)
Jasa Marga (JSMR.JK)
Pakuwon Jati (PWON.JK)

That gives you Islamic banking, telecom, consumer staples, mining, and infrastructure. The biggest constraint is that you cannot own the largest Indonesian banks, which removes a huge portion of the index from consideration. Your halal Indonesian portfolio will be structurally underweight financials and overweight consumer, mining, and telecom.

How to access IDX

Foreign investors can trade IDX stocks through local brokers or through international brokers with Indonesian market access. Indonesia has relatively open foreign ownership rules for most listed stocks. The exchange settles T+2 and trades in Indonesian rupiah.

iShares MSCI Indonesia ETF (EIDO) on NYSE gives broad exposure but is not Shariah-screened. For Shariah-compliant exposure that includes Indonesia, the iShares MSCI Emerging Markets Islamic ETF (ISEM.L) holds several Indonesian names. There is no standalone Indonesia Islamic ETF available on major US exchanges.

Bottom line

Indonesia is the world's largest Muslim-majority country but its stock market is dominated by conventional banks that most halal investors cannot own. The investable halal universe centers on Bank Syariah Indonesia, telecoms, consumer staples, and mining. The Indonesian OJK's Shariah screening thresholds are more permissive than international standards, so some names classified locally as compliant would fail under AAOIFI or MSCI screens. Use stricter standards if you want to build a portfolio that would pass muster in any global halal framework. The upside of Indonesia is the demographic story, the commodities exposure, and the growth of Bank Syariah Indonesia into a top-tier Islamic finance franchise.

Indonesia IDX: The World's Largest Muslim Population's Stock Market