Private company
Who owns PT Smelting
One company in the researched set discloses a stake in PT Smelting, none of it sized by anyone who discloses it. PT Smelting is private, so no 13F reports it: a 13F covers exchange listed positions only. These figures exist because each holder disclosed the stake in its own filings.
PT Smelting - Profile
- Type
- joint venture
- Based in
- Indonesia
PT Smelting operates Indonesia's first copper smelter and refinery, a complex at Gresik in East Java that takes copper concentrate from Indonesian mines and turns it into Grade A copper cathode, with sulphuric acid recovered from the flue gas at an on-site acid plant. The venture dates from 1994, when PT Freeport Indonesia invited Mitsubishi Materials Corporation to build a domestic smelter so that concentrate could be processed inside the country rather than shipped abroad, and commercial production began in May 1999 using the continuous Mitsubishi smelting and converting process together with ISA technology in the refinery. The plant has been expanded since, and because it is the main domestic outlet for concentrate from the Grasberg complex, an unplanned outage there strands concentrate at the mine and delays Indonesian copper shipments.
Source
PT Smelting files nothing with the SEC, so none of this comes from a filer record. The description was written for this site in August 2026 from PT Smelting company website, PT Smelting, Gresik smelter (Mitsubishi Materials Corporation) and Indonesia copper shipments delayed by Gresik smelter outage (MINING.COM). The ownership figures below come from the holders' filings instead, and are sourced row by row.
The disclosed stakes
One row per position. Where a holder reports the same company in two share classes, both rows are shown rather than summed, because the class is part of a position's identity.
Where each figure comes from
A private stake has no ownership form behind it, so the source is always the holder's own filing or disclosure. Anything modelled says so, with the arithmetic.
- Freeport-McMoRan Inc.. FCX's FY2025 10-K (Note 2 and the Other Smelting Facilities and Mining Properties section) states PTFI's 66% ownership interest in PT Smelting (up from 39.5% prior to 30 June 2024), a copper smelter and refinery in Gresik, Indonesia operated by joint venture partner Mitsubishi Materials Corporation. Despite majority ownership, PTFI accounts for its investment in PT Smelting under the equity method because PTFI has significant influence but not control (PTFI is not the primary beneficiary under VIE analysis). No standalone carrying value or dollar investment balance for PT Smelting is disclosed in either the FY2025 10-K or the Q2 2026 10-Q: PT Smelting's carrying amount would sit within the consolidated balance sheet's 'Other assets' line ($1,717 million at 30 June 2026, $1,658 million at 31 December 2025), which covers multiple unrelated items (e.g. long-term restricted cash), so per the brief's rule against assigning a combined balance to one investee, value_usd is left null rather than estimated from that total. The only disclosed dollar figures are PTFI's annual equity-method earnings from PT Smelting: $6 million in 2025, $8 million in 2024 and $10 million in 2023 (FY2025 10-K), and $5 million and $11 million for Q2 2026 and H1 2026 respectively (Q2 2026 10-Q income statement, 'Equity in affiliated companies' net earnings'). sourcesource 2
What this page is not
It is not a complete register. It lists the holders who happen to be inside the researched set and disclosed the stake themselves. A private company can have many other shareholders, and nothing here rules them out: venture investors, founders and employees usually appear in no public filing at all. Percentages are of PT Smelting where a holder stated one, and are missing where no holder did.