Three major issues for global large-cap miners: portfolio evolution, growth optionality, and differentiated assets

Overview

This is an industry and company portfolio study on global large miners. Against the backdrop of U.S. policy volatility, complex geopolitics, industry M&A, the energy transition, and AI potentially boosting metals demand, the report discusses how large miners balance shareholder returns and growth investment. The core framework is three "Big Issues": portfolio, growth optionality, and differentiation. The report covers companies including BHP, Rio Tinto, Anglo American, Glencore, Vale, Teck, Freeport-McMoRan, South32, Fortescue, and Southern Copper, and compares exposures to commodities such as copper, iron ore, coal, lithium, aluminium, and potash.

Core views

The core view of the report is that although large miners’ portfolios change slowly, their direction is converging: iron ore and copper remain central, copper’s importance is rising significantly, and the higher metal intensity brought by the energy transition makes "future-facing commodities" such as copper, nickel, cobalt, lithium, silver, and rare earths more attractive. At the same time, companies still retain different differentiation labels, such as Rio Tinto’s lithium and aluminium, Glencore’s trading and coal, BHP’s potash, Anglo American’s restructuring, and Freeport-McMoRan’s U.S. footprint and copper asset base. BofA is more positive on companies with copper growth and abundant project optionality, and more cautious on companies facing valuation and capital-allocation pressure.

Analysis framework

The report uses a cross-company comparative approach, combining valuation, commodity revenue mix, project pipeline, portfolio evolution, and company event timelines for analysis. The valuation section is based on BofA’s internal "base case" commodity price forecasts and compares metrics such as ROE, ROCE, EV/Sales, EV/IC, NPV, and P/NPV; the portfolio section tracks changes in each company’s revenue mix by commodity from 2018A to 2028E; the project section distinguishes committed growth, greenfield projects, brownfield expansions, and long-dated optionality; the strategy section assesses each company’s progress in exiting coal, oil, nickel, and PGMs or entering copper, lithium, potash, and aluminium.

Methodology notes

• Industry comparisonThree Big Issues framework

  Portfolio, optionality, differentiation

  The report evaluates the investment value of large miners across three dimensions: portfolio evolution, project optionality beyond committed growth, and sources of company differentiation.

• Valuation methodsComparable company valuation

  ROE, ROCE, EV/Sales, EV/IC, NPV, P/NPV

  Based on BofA’s internal commodity price assumptions, the report compares profitability, capital returns, enterprise value multiples, and net-present-value-related metrics across large miners.

• Commodity exposureRevenue mix breakdown by commodity

  Changes in revenue mix from 2018A to 2028E

  The report uses revenue mix by commodity to observe the speed and magnitude with which companies are shifting from traditional exposures such as coal and oil toward copper, lithium, aluminium, and other future-facing commodities.

• Investment driversPrice, volume, self-help improvement

  Mining equity relative drivers

  The report argues that the relative performance of mining equities is mainly driven by three types of factors: commodity prices, volume growth, and company self-help improvement.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• BHP

  Buy; global large miner with significantly increasing copper exposure

  Strengths

  Described as "the world’s largest copper company," it is adding long-dated copper optionality through OZ Minerals, Vicuña, and other initiatives, while iron ore and copper remain core.

  Weaknesses

  The portfolio transition needs to absorb capital expenditure for large projects, and potash and certain coal-related decisions still affect capital allocation.

  Comparison

  Relative to peers, BHP stands out in scale and copper growth, while also differentiating itself through potash.

  Risks

  Projects such as Vicuña require large capital expenditure, and commodity prices and project execution progress will affect returns.

• Rio Tinto

  Buy; iron ore leader expanding into copper and lithium

  Strengths

  It has exited coal and is advancing the Oyu Tolgoi underground copper mine, the Simandou iron ore project, and lithium businesses such as Arcadium Lithium and Rincon.

  Weaknesses

  Iron ore still accounts for an important share, the Jadar lithium project remains under care and maintenance, and Resolution Copper has a long permitting cycle.

  Comparison

  Like BHP, it is one of the largest miners by market cap, with differentiation in lithium, aluminium, and Mongolian copper growth.

  Risks

  Lithium price cycles, project approvals, capital expenditure, and iron ore price volatility.

• Glencore

  Buy; differentiated by copper, coal, and trading business

  Strengths

  It has industry-leading copper optionality, increased metallurgical coal exposure after acquiring Teck’s steelmaking coal assets, and its trading business provides a unique source of cash flow.

  Weaknesses

  The retention or potential spin-off of its coal business may continue to create investor debate.

  Comparison

  Relative to other large miners, Glencore’s differentiation comes from its trading platform, coal cash flow, and copper project pipeline.

  Risks

  Coal ESG discount, progress of Argentine projects, regulation, and commodity price volatility.

• Vale

  Buy; value-first in iron ore, with improving copper growth

  Strengths

  Iron ore remains core, while the sale of coal assets, independent governance for Vale Base Metals, and development of copper projects such as Bacaba, Salobo CPF, and New Carajas improve the portfolio.

  Weaknesses

  The revenue mix remains highly dependent on iron ore, and partial disposal of base metals assets may affect long-term control.

  Comparison

  Compared with companies that have higher copper purity, Vale is more iron-ore-oriented, but it is improving the portfolio through copper growth.

  Risks

  Iron ore prices, Chinese demand, execution of Brazilian assets, and the pace of capital returns.

• Freeport-McMoRan

  Buy; blue-chip copper assets, with optionality from leaching and Indonesian recovery

  Strengths

  It is fundamentally copper-led, with additional gold and molybdenum; leaching technology, the El Abra expansion, and Grasberg recovery provide growth catalysts.

  Weaknesses

  Recovery progress after the Grasberg incident in Indonesia is critical, and geographic and operational concentration is relatively high.

  Comparison

  Relative to diversified miners, Freeport is closer to a pure copper asset.

  Risks

  Recovery of Indonesian operations, permitting, copper prices, and single-commodity volatility.

• South32

  Buy; exiting coal and increasing base metals exposure

  Strengths

  It has sold metallurgical coal, holds a 45% stake in the Sierra Gorda copper mine, and is advancing the Hermosa zinc-lead-silver project.

  Weaknesses

  The portfolio transition is still being executed, and its scale and project maturity are weaker than those of the largest miners.

  Comparison

  Smaller in scale than BHP and Rio Tinto, but its transition toward copper and base metals is clear.

  Risks

  Project execution, zinc-lead-silver prices, and the timing of copper asset contribution.

• Anglo American

  Neutral; restructuring and the Anglo Teck transaction are the key variables

  Strengths

  It is accelerating exits from coal, diamonds, nickel, and PGMs, and the portfolio may become more focused after restructuring; management views Woodsmith as a core asset.

  Weaknesses

  Investors remain skeptical about Woodsmith, restructuring execution is complex, and the Teck transaction remains an important point to watch.

  Comparison

  Relative to peers, Anglo’s differentiation mainly comes from restructuring and the potential Anglo Teck combination.

  Risks

  Asset sales, transaction approvals, Woodsmith capital expenditure, and uncertainty over returns from the fertilizer project.

• Fortescue

  Underperform; high iron ore purity, with capital allocation under scrutiny

  Strengths

  Its Pilbara iron ore assets and low-carbon operating technology platform provide the foundation, and it is exploring a copper project in Argentina.

  Weaknesses

  At present it remains essentially a pure iron ore asset, its green energy business has shifted from large standalone projects toward serving its own decarbonization, and its copper projects are still early-stage.

  Comparison

  Relative to miners with more balanced portfolios or higher copper exposure, Fortescue has greater portfolio concentration.

  Risks

  Iron ore prices, capital allocation, uncertainty in early-stage copper projects, and returns on decarbonization investment.

• Southern Copper

  Underperform; world-class copper resources, but valuation is the key constraint

  Strengths

  It has high copper purity and owns expansion and project resources such as Toquepala, Buenavista, and Tía María.

  Weaknesses

  The report rates it Underperform, mainly due to valuation pressure.

  Comparison

  Like Freeport and other copper assets, the company also has high-quality copper exposure, but its valuation is less attractive.

  Risks

  Valuation derating, project permitting, execution risks in Peru and Mexico, and copper price volatility.

• Teck

  No Rating; focus on the Anglo transaction and QB2 execution

  Strengths

  After exiting oil sands and steelmaking coal, the QB2 ramp-up makes copper a more important product, and Highland Valley Copper’s mine life has been extended to 2046.

  Weaknesses

  The company is in a transaction and integration observation period, and the report does not assign a rating.

  Comparison

  Relative to traditional diversified miners, Teck’s portfolio becomes more concentrated after pivoting toward copper, and it may form a new platform with Anglo.

  Risks

  Execution of the Anglo Teck transaction, QB2 stability, copper prices, and regulatory approvals.

Key data

• Report date2026-04-20The file business date is 2026-04-22.
• Covered companiesBHP, Rio Tinto, Anglo American, Glencore, Vale, Teck, Freeport-McMoRan, South32, Fortescue, Southern CopperThe report uses global large miners as the comparison group.
• BofA view summaryBHP, Rio Tinto, Glencore, Vale, Freeport-McMoRan, and South32 are Buy; Anglo American is Neutral; Fortescue and Southern Copper are Underperform; Teck is No RatingThe ratings come from the opening section, "Our equity views in brief".
• Large miner market capitalizationBoth BHP and Rio Tinto exceed US$150bnThe chart annotation states that BHP and Rio Tinto are the two largest Big Miners.
• Initial capital expenditure for the Vicuña projectApproximately US$18bnBHP and Lundin’s Vicuña copper district uses a phased development plan.
• Expected average output for the first 25 years of the Vicuña projectApproximately 400,000 tonnes of copper, 700,000 ounces of gold, and 22 million ounces of silver per yearThe technical study expects first-quartile cost curve characteristics over the first 25 years.
• Vicuña project mine lifeMore than 70 yearsThe initial mine life is long and there is additional exploration upside to extend it.
• Vicuña project NPVUS$9.5bn after-tax; rising to US$28.8bn under a higher metals price scenarioBase assumptions are copper at US$4.60/lb, gold at US$3,300/oz, and silver at US$40/oz; the high-price scenario assumes copper at US$6.00/lb, gold at US$5,000/oz, and silver at US$80/oz.

Impact & implications

For investors, the report suggests that large miners should not be valued solely under the traditional framework of "tier-one assets + high dividends," but rather by focusing on comparisons of their copper and future-facing commodity exposure, the quality of project optionality, capital expenditure pacing, and execution in portfolio exits and M&A. Copper growth and low-risk brownfield expansions may offer higher certainty, while mega greenfield projects, long permitting timelines, coal retention or divestment, concentrated iron ore exposure, and high valuations may widen dispersion. The narratives of the energy transition and AI demand increasing metal intensity support long-term demand for metals such as copper, but commodity prices, geopolitics, project permitting, and capital allocation remain the main uncertainties.

Risks

• Commodity price volatility, especially changes in copper, iron ore, coal, lithium, and gold prices.
• Large greenfield projects have high capital expenditure and long construction cycles, and actual returns may fall short of expectations.
• Permitting and regulatory processes are lengthy; for example, projects such as Resolution Copper face approval uncertainty.
• Retention, spin-off, or sale of coal businesses may trigger valuation and ESG disagreements.
• Execution risk in M&A and restructuring, including transactions or asset disposals involving Anglo American, Teck, Glencore, and others.
• Geopolitics, war, U.S. policy volatility, and resource nationalism may affect operations and capital allocation.
• Companies with concentrated iron ore exposure are more sensitive to Chinese demand and prices.
• Operational events at key mines such as Grasberg in Indonesia may affect production recovery for companies such as Freeport.

What to watch

• Copper price trends and whether demand from the energy transition, AI, and electrification continues to support higher metal intensity.
• Progress on BHP and Lundin’s phased development plan for the Vicuña copper district, capital expenditure optimization, and exploration-led mine-life extension.
• Rio Tinto’s Oyu Tolgoi underground copper ramp-up, lithium asset integration, and Resolution Copper permitting.
• Whether Glencore continues to retain its coal business, and progress on Argentine projects such as El Pachón, Alumbrera, and Agua Rica.
• Anglo American’s restructuring, capital discipline at the Woodsmith project, and portfolio changes after the Anglo Teck transaction.
• The balance between Vale’s iron ore cash returns and copper growth at Vale Base Metals.
• Freeport’s Grasberg recovery, permitting for the El Abra expansion, and commercialization of leaching technology.
• Whether Fortescue can effectively transition from a pure iron ore asset toward copper or low-carbon technology while maintaining capital discipline.
• Execution of South32’s Sierra Gorda and Hermosa projects.
• Project progress and changes in market expectations for Southern Copper against a backdrop of high valuation.