What Sector Does BUMI Shares Operate?

EARTH Stock is a share of the issuer PT Bumi Resources Tbk which operates in the mining sector coal mining as a leading holding company in Indonesia. The company controls several major subsidiaries that manage large-scale coal mines, primarily through PT Kaltim Prima Coal (KPC) and PT Arutmin Indonesia.

If you're wondering what BUMI shares are involved in, the answer is clear: its core business is the production, processing, and sale of thermal coal for both domestic and export markets.

Key Takeaways

• BUMI shares are shares in a coal mining holding company with main subsidiaries KPC, Arutmin, and Pendopo Energi Batubara which control concessions totaling more than 113,000 hectares.
• BUMI's business focuses on high-quality thermal coal, with a history of peak production reaching 87.7 million tonnes of sales in 2019 and is now debt-free following a successful restructuring.
• Mining concessions are spread across East Kalimantan (KPC Sangatta), South Kalimantan (Arutmin), and South Sumatra (Pendopo), making it a significant player in Indonesia's energy industry.

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What are PT Bumi Resources Tbk and its BUMI shares?

PT Bumi Resources Tbk (stock code: BUMI) has been listed on the Indonesia Stock Exchange since July 30, 1990. The company transformed from a hotel business into a coal mining giant under the control of the Bakrie group and later involved strategic investors.

Currently, BUMI acts as a holding company that does not mine directly, but rather controls operational subsidiaries through majority ownership.

PT Bumi Resources Tbk is a mining holding company operating in the energy sector, particularly coal. Based on IDX data, the sector is Energy with the Oil, Gas & Coal sub-sector.

The core business is coal mining management through subsidiaries that have PKP2B (Coal Mining Business Work Agreement) permits.

BUMI shares often attract investor attention due to their sensitivity to global coal prices, Indonesia's energy policies, and export demand to China, India, and other Asian countries.

Despite its volatility, the company has unique fundamentals: it has settled all debt obligations in 2022 and now is debt-free, a major achievement after a long restructuring process.

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A Brief History of BUMI's Business Transformation

Founded in 1973 as PT Bumi Modern, the company initially operated in the hospitality and tourism sector. Its shares began trading on the stock exchange in 1990. A major turning point occurred in 1997–1998 when PT Bakrie Capital Indonesia took over and shifted its business focus to oil, gas, and mining.

In 2001, BUMI acquired 80% of PT Arutmin Indonesia (then Indonesia's fourth-largest coal producer). Two years later, in 2003, BUMI acquired 100% of PT Kaltim Prima Coal (KPC), Indonesia's largest coal producer at the time. The combination of these two subsidiaries once controlled a significant market share of Indonesia's coal exports.

In 2007, part of its ownership was sold to Tata Power (India). The company also acquired mineral assets in Australia (Herald Resources). After overcoming a difficult period due to debt and fluctuating commodity prices, BUMI successfully completed its restructuring in 2022 and became a debt-free company.

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BUMI's Main Business: Focus on Coal Mining

BUMI's current business is a coal mining holding company. The main income comes from the sale of coal produced by subsidiaries. The following are the main subsidiaries and their ownership (latest IDX data):

• PT Kaltim Prima Coal (KPC)— 50.99% owned by BUMI
• PT Arutmin Indonesia— 90% owned by BUMI
• PT Pendopo Coal Energy— 84.48% owned by BUMI
• PT Bumi Resources Minerals Tbk (BRMS)— 20.09% owned by BUMI (focus on minerals & metals)
• PT Darma Henwa Tbk (DEWA)— 12.44% (mining contractor)

The business model is to control concessions and operations.through its subsidiaries, while BUMI, as the parent company, manages strategy, finance, and portfolio development. In addition to coal, through BRMS, the company has also begun diversifying into non-coal minerals such as gold and other metals.

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List of Bumi Resources Mining Concessions in Indonesia

The total area of ​​BUMI's mining concessions and its subsidiaries reaches 113,590 hectares. Here are the key details based on official data and company reports:

PT Kaltim Prima Coal (KPC)

Location: Sangatta and Bengalon, East Kutai Regency, East Kalimantan.

Concession area: approximately 90,938 hectares (some sources say the current effective area is smaller after regulatory adjustments).

Characteristics: One of the world's largest export coal mines with fully integrated facilities (mine, processing, port). High-quality thermal coal for export.

PT Arutmin Indonesia

Location: South Kalimantan region (main areas such as Asam-asam, Satui, and surrounding areas) and parts of East Kalimantan.

Historical concession area: more than 58,000 hectares (has undergone area adjustments according to new regulations).

Characteristics: Large coal producer with several open pit mining blocks and own shipping facilities.

PT Pendopo Energi Batubara (PEB)

Location: Muara Enim and Pali, South Sumatra (about 140 km southwest of Palembang).

Concession area: 17,840 hectares.

Operating permit: 30 years (2009–2039) with extension option.

Characteristics: Coal mine accessible via land and the Musi/Lematang river.

In addition to its three main coal subsidiaries, PT Bumi Resources Minerals manages non-coal mineral concessions in various regions of Indonesia.

These concessions generally take the form of PKP2B which grants exclusive rights to explore and exploit for a certain period, with divestment and royalty obligations to the state.

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BUMI Stock Performance and Growth

BUMI share price is quite volatile due to its heavy influence on international coal prices. At the end of 2025, the price reached Rp222, but recent data shows it hovering around Rp157, with a market cap of around Rp58 trillion. The year-to-date (YTD) performance has been significantly negative, reflecting commodity price pressures and market sentiment.

However, from a fundamental perspective, the settlement of all debt in 2022 is a positive long-term catalyst. The company now has a much healthier balance sheet than in the previous decade. BUMI's stock growth in 2025–2026 is highly dependent on a recovery in coal prices and government policies related to the energy transition.

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How to Buy BUMI Shares on the Indonesian Capital Market

Buying BUMI shares is very easy for Indonesian investors:

1. Open a securities account (stock account) at a securities company registered with the OJK and BEI.
2. Perform identity verification (e-KYC) and fill out the risk profile.
3. Deposit funds into a securities account.
4. Buy BUMI shares through your online securities trading application (e.g., IPOT, Stockbit, Ajaib, or bank securities platforms).

Make sure you understand the risks of investing in volatile mining stocks. Diversifying your portfolio and conducting independent research or consulting with a financial advisor is highly recommended.

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Prospects and Risks of BUMI's Mining Business

Positive prospects:

• A debt-free position provides room for expansion or new acquisitions.
• Diversification into minerals through BRMS.
• Indonesian coal demand remains strong for domestic power generation and exports.
• Potential concession extension and production optimization.

Main risks:

• Global coal price fluctuations.
• Energy transition policies and carbon emission restrictions.
• Operational risks and mining regulations.
• Dependence on the economic conditions of major trading partners.

As an investor, it is important to monitor quarterly financial reports, Newcastle/ICI coal price developments, and updates on ESDM policies.

Conclusion

BUMI shares operate in the following sectors:coal mining through subsidiaries that manage extensive concessions in Kalimantan and Sumatra. With a long history of transformation, current debt-free status, and a portfolio of quality mines, BUMI remains an attractive mining issuer to watch. However, like all commodity stocks, its movements are heavily influenced by external factors.

Before deciding on an investment, always conduct a thorough analysis and consider your own risk profile.

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FAQ

What are BUMI shares?

BUMI shares are shares of PT Bumi Resources Tbk, a holding company that controls major coal mining subsidiaries such as KPC and Arutmin. These shares are traded on the Indonesia Stock Exchange under the ticker symbol BUMI.

What is Bumi Resources' main business?

BUMI's core business is thermal coal mining and sales through its subsidiaries. The company also owns PT Bumi Resources Minerals, which operates in the non-coal minerals sector.

Where are BUMI's mining concessions located?

The main concessions are in Sangatta-Bengalon (East Kalimantan) through KPC, the South Kalimantan region through Arutmin, and Muara Enim-Pali (South Sumatra) through Pendopo Energi Batubara, with a total area of ​​more than 113,000 hectares.

Are BUMI shares suitable for long-term investment?

It depends on your risk profile. BUMI has healthier fundamentals after becoming debt-free, but its share price is highly sensitive to fluctuations in coal prices and energy policies. It's suitable for investors who understand commodity cycles.

How to buy BUMI shares?

You can buy BUMI shares through an official securities trading app after opening a securities account. Select a security listed on the IDX, make a deposit, and then place a buy order for BUMI shares like any other stock.