7 Zinc Mining Companies Compared: Miners, Smelters and Majors

The largest zinc miner in the world is not automatically the best way to own zinc. Glencore mined roughly 0.97 Mt of zinc in 2025, more than almost anyone, yet zinc is a small slice of a business built on many metals and energy products. Nyrstar, by contrast, earns its living from a completely different link in the chain.

That gap matters because “zinc exposure” can mean three different things. A company might dig up concentrate, smelt it into refined metal, or do both as one division inside a sprawling portfolio. Each model reacts differently when the zinc price moves.

The timing makes this worth getting right. The market ran a 69 kt deficit in 2024 and a narrower 33 kt deficit in 2025, even though forecasters had expected a surplus. When the balance is this finely poised, the company you pick shapes your result more than the commodity call itself.

This guide profiles seven global zinc mining companies and producers across two tiers. It also gives you a clear way to match each one to the type of zinc exposure you actually want.

Why a zinc miner is not the same as a zinc investment

You might assume the company that produces the most zinc gives you the most zinc exposure. It is a reasonable starting point. It is also where many investors go wrong.

How the zinc supply chain works

Zinc starts as ore in a mine. The ore is crushed and processed into concentrate, a powder that holds a much higher share of zinc than the raw rock. This is what “mined zinc” or “zinc in concentrate” means in company reports.

A smelter then turns concentrate into refined zinc, the pure metal that galvanisers and manufacturers buy. Some companies smelt their own concentrate (own-sourced feed). Others buy it from miners (third-party feed) and charge a treatment charge, which is the fee a smelter receives for processing concentrate into metal.

That split creates three distinct bets for you.

Comparing these producers also takes care. Indian fiscal years run April to March, while Glencore and Teck report on calendar years. Hindustan Zinc’s “mined metal” figure includes lead, so it overstates pure zinc output.

Where the market balance stands

The International Lead and Zinc Study Group (ILZSG) put 2025 refined zinc demand at about 13.71 Mt and refined output at about 13.80 Mt in its October 2025 update. It expects demand to grow only about 1% in both 2025 and 2026.

Forecast versus reality ILZSG forecast a 2025 surplus of 93 kt in April 2025 and 85 kt in October 2025. A February 2026 market report instead put the realised 2025 balance at a 33 kt deficit.

Supply moved in both directions. The Kipushi mine in the Democratic Republic of Congo (commissioned June 2024) and the Zhairem ramp-up in Kazakhstan added concentrate, while the closures of Glencore’s Portovesme smelter in Italy and Toho Zinc’s Anakka operation in Japan removed refining capacity. Higher output at the Odda smelter helped offset those closures.

The lesson for you is simple: consensus balances can swing by more than 100 kt inside a year, so treat any single-year market call with caution when you pick a company.

Mine supply and refined supply do not always move together, and smelter disruptions can keep refined metal tight even when concentrate is arriving in larger volumes, which is why your choice between a miner and a smelter matters.

Tier 1 producers: Glencore, Teck, Hindustan Zinc and Nyrstar

With those three exposure types in mind, the four largest names sort themselves neatly. Start with the biggest and most diversified, and the zinc exposure sharpens as you move down the list.

Glencore, the volume leader with diluted exposure

• Own-sourced zinc of 969.4 kt in 2025, up 7% from 905 kt in 2024 (and 918.5 kt in 2023), helped by higher grades at Antamina and stronger McArthur River output
• Lady Loretta produced 1.5 Mt of ore in 2024 at 9.2% zinc
• Listed on the London Stock Exchange (LSE)

The guidance gap Glencore has narrowed its 2026 zinc guidance to 700-740 kt, well below 2025’s 969.4 kt. The available research does not explain the drop, so this is a question to put to the company’s filings.

Because zinc sits alongside copper, coal and other products, a zinc slump hurts you less. A zinc rally also helps you less.

Teck Resources, Red Dog and the Trail link

• 2025 zinc in concentrate of 565 kt: Red Dog contributed 462.7 kt, plus Teck’s 22.5% share of Antamina (102.3 kt)
• Trail refined 229.9 kt of zinc in 2025
• Listed on the Toronto Stock Exchange (TSX)

Teck gives you a hybrid: mine leverage from Red Dog, with a refining arm attached.

Hindustan Zinc, India’s dominant producer

• Record mined metal of 1,114 kt in FY 2025-26 (April 2025 to March 2026), up 2% from 1,095 kt, after 1,079 kt in FY24
• Refined zinc of 851 kt in FY 2025-26
• Listed on the National Stock Exchange of India (NSE) as HINDZINC.NS

Hindustan Zinc sits inside Vedanta’s Zinc India segment. The brief describes it as 75% Vedanta-owned, though the research could not independently confirm that figure. Its steady output ties your return more directly to zinc and lead, but parent-company strategy and governance come with the package.

Nyrstar, a smelting story

Nyrstar is Belgium-based, focused on processing and smelting, and has been through a financial restructuring. Its fortunes hinge on treatment charges and refining margins rather than mined volume.

The research found no verified output, listing or ownership data. ILZSG cited Odda’s output gains, but its ownership was not confirmed, so do not assume it belongs to Nyrstar.

Investors exploring smelter-specific risk can read our detailed coverage of the Nyrstar Budel smelter review, which shows how one refining decision moved LME zinc more than any demand signal.

Tier 2 producers: Korea Zinc, Boliden and MMG

The second tier is not simply a smaller version of the first. Each name suits a specific thesis, and you should judge it on that basis rather than on headline volume.

• Korea Zinc: Smelter-focused, so its exposure looks closer to Nyrstar’s than to a miner’s. Reports of governance disputes were not verified, which makes them a due diligence item rather than an established fact.
• Boliden: A European polymetallic operator with Garpenberg in Sweden and Tara in Ireland. It suits you if you want European jurisdiction exposure to mined zinc.
• MMG: Owner of Dugald River in Australia, with the legacy Century operation. It fits a thesis built around an Asia-linked mine portfolio.

The research did not find verified mined zinc output, listings or market capitalisations for any of these three. Go to each company’s latest annual report for current figures before you weigh them against Tier 1. Until you do, treat them as thesis-driven positions rather than interchangeable zinc proxies.

How to choose between zinc mining companies

You now have seven profiles. The next step is turning them into a shortlist, and four questions will do most of the sorting for you.

1. How much zinc price leverage do you want? If you want returns that follow zinc closely, lean towards miners. If you want a cushion, a diversified major fits better.
2. Will you accept smelter margin risk? Smelters profit from the gap between concentrate supply and refining capacity, not from the zinc price alone.
3. How much parent-company or governance risk can you tolerate? Hindustan Zinc’s Vedanta link and the unverified Korea Zinc questions both belong here.
4. Which regions and currencies suit you? The verified listings span the LSE (Glencore), TSX (Teck) and NSE (Hindustan Zinc), each with its own currency exposure.

The miner versus smelter split decides a lot here. Miners such as Glencore (905 kt to 969.4 kt) and Hindustan Zinc (record 1,114 kt mined metal) are positioned to benefit if concentrate stays tight, as the 2024 and 2025 deficits suggest. Smelters win when concentrate is plentiful and refining capacity is scarce.

With demand growing only about 1% a year, a broad demand boom is unlikely to lift every stock. Your returns will depend more on supply events and how well each company executes.

With growth near 1%, the zinc demand drivers behind galvanising, construction and infrastructure spending matter more than headline forecasts, because they decide how much pressure sits on supply.

Risks every zinc stock investor should weigh

A sound framework still sits on uncertain ground. These are the risks that deserve your attention:

• Forecast uncertainty: ILZSG’s projected surpluses of 93 kt and 85 kt became a realised 33 kt deficit. If the sector’s main body can miss by that much, any single forecast deserves scepticism.
• Operational and ramp-up risk: World mine production fell for three years because of planned and unexpected closures, then Kipushi and Zhairem showed how quickly new supply can arrive.
• Diversification dilution: Glencore’s zinc exposure is spread thin across its portfolio.
• Cost and ESG pressure: Energy, labour and environmental compliance costs can erode margins and push capacity offline, as the Portovesme and Anakka closures show.
• Corporate structure: Nyrstar’s restructuring history and Hindustan Zinc’s Vedanta parent both add company-specific risk.

This guide could not verify several numbers that matter for valuation. That means it works as a screening list, not a buy list. Check these five first:

1. Market capitalisation
2. Zinc segment EBITDA (earnings before interest, tax, depreciation and amortisation)
3. Cash costs per tonne
4. Reserves and mine life
5. Current London Metal Exchange (LME) zinc price and warehouse stocks

Past performance does not guarantee future results. Production guidance and market forecasts are subject to change based on market conditions and company performance.

Matching your zinc exposure to the right producer

The core distinction is now clear. Miners tie you to concentrate volumes and the zinc price, smelters tie you to processing margins, and diversified majors soften both the downside and the upside.

Several variables will shape the next year. Watch whether Glencore delivers its 700-740 kt 2026 guidance and how it explains the fall from 2025. Track new mine ramp-ups, further smelter closures and the next ILZSG balance update, which will show whether the deficit holds.

The 2026 zinc production forecast matters for Glencore and Teck alike, since new concentrate supply from ramp-ups can shift the balance between miner leverage and smelter margins within a single year.

Your next step is practical. Use the four questions to shortlist two or three companies, then pull their latest filings to confirm market capitalisation, costs, reserves and segment earnings before you commit capital.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions.