Mining and Industrial Metals: How to Invest in BHP, Rio Tinto and the Materials Sector

Iron ore. Copper. Nickel. Lithium. Without these commodities modern civilisation does not exist — not a single data centre, not a single electric car, not a single wind farm. And yet the mining sector is systematically ignored by technology-focused investors. The reason is a good memory: commodity cycles are brutal.

How the mining business works

Mining companies sell physical commodities on world markets at prices they do not control. Costs of extraction are relatively stable, but the selling price depends on global demand and supply. The result is massive cyclical swings in profit.

A characteristic feature of the sector is enormous capital intensity. Opening a new mine costs billions of dollars and takes years. When commodity prices fall below a profitable level, companies reduce or halt investment. That curtails future supply and sets the stage for the next price rise — but with a 5–10-year delay. That is why commodity cycles are so deep and so difficult to predict.

BHP: the world's largest mining company

BHP Group (BHP) is an Australian giant with primary listings in Sydney and London. It mines iron ore, copper, nickel and historically coal — it sold the coal division in 2022 in response to ESG pressure. Iron ore makes up the dominant share of profit, but the company is systematically expanding its copper exposure in view of electrification.

BHP is a more defensive mining choice: low costs, established mines, consistent dividend (though variable according to profit). The Australian dollar adds currency risk for eurozone investors.

Rio Tinto: iron, aluminium, lithium

Rio Tinto (RIO) has a similarly diversified profile but with greater exposure to aluminium and lithium. Its titanium and borates divisions are less watched but add resilience through the cycle. In recent years the company came under pressure over the destruction of an Aboriginal sacred site — the Juukan Gorge case — which highlighted the ESG and licence-to-operate risks that are critical in mining.

Glencore: mining plus trading

Glencore (GLEN) is a different kind of player. It combines mining (cobalt, nickel, copper, coal) with global commodity trading. The trading division earns even when commodity prices are low, thanks to market volatility. That makes Glencore a less pure commodity exposure but at the same time more resilient in a deep cyclical downturn.

Glencore has remained one of the world's largest producers of thermal coal — a deliberate strategic choice with yield, for which many ESG investors exclude it from portfolios. For an investor it is a matter of conscious choice.

The ETF approach: XME and alternatives

The SPDR S&P Metals and Mining ETF (XME) covers the American metals, mining and steel sector. It is not global exposure — American mining companies make up a smaller portion of the world sector than Australian, British or Brazilian ones. For truly global exposure, ETFs tracking MSCI World Materials or iShares Global Mining are more appropriate.

The materials sector is part of standard world indices at a weight of roughly 4–5 %. Those who hold VWCE or MSCI World already have mining in the portfolio. Adding it on top makes sense only with a clear thesis — for example the electrification thesis for copper and lithium.

Risks that must not be underestimated

• Geopolitics: A large share of mining takes place in politically unstable regions — the Democratic Republic of Congo, Chile, Mongolia.
• Environmental regulation: New mining in various locations faces lengthy approval processes that raise costs and slow the supply response.
• Chinese demand: China consumes approximately 50 % of global industrial metals. A slowdown in the Chinese economy or real-estate sector directly hits prices.
• Currency risk: Australian, British or Brazilian mining companies add exposure to AUD, GBP and BRL exchange rates.

The mining sector is an interesting diversification component for an experienced investor — not the foundation of a portfolio. The core skeleton remains a diversified global index, as discussed in the first portfolio guide. Sector added value depends on timing and discipline. This is not investment advice.

Dividends in mining: variable policy as the standard

Both BHP and Rio Tinto practise a so-called variable dividend policy — they pay a percentage of profit, not a fixed amount. In a year of high commodity prices the dividend explodes. In a downturn year it falls to a minimum. That is a fundamental difference from American Dividend Aristocrats or utilities, where the dividend is relatively stable.

For investors seeking regular income this instability is a disadvantage. For those who understand cyclical business and reinvest dividends automatically it is actually an advantage: in commodity supercycles the portfolio receives a record dividend, while in downturns the company conserves cash for future investments.

Glencore combines this policy with trading diversification — commodity trading generates income even when prices are lower, because it earns on price spreads and volatility, not on the absolute price level.

How to sensibly incorporate mining into a portfolio

Anyone considering exposure to industrial metals has three basic paths. Direct equities (BHP, Rio Tinto, Glencore) give the greatest control over the risk profile but require understanding individual companies. Sector ETFs on materials distribute risk across dozens of companies but add less relevant components such as chemicals or paper. A global index includes the materials sector automatically at roughly 4–5 % and requires no decision at all.

Mining is a good diversification component in a period when inflation remains structurally higher and physical assets hold value. It is unsuitable as the main return engine of a portfolio or for investors with a short horizon — commodity cycles last years, not months. More on the approach to sectors in the ETF guide.

The ecological transformation of mining: ESG and the social licence to operate

The mining industry is among the largest emitters of CO2 and the largest consumers of water in the industrial sector. ESG pressure is genuinely changing conditions: companies without a clear decarbonisation strategy face higher cost of capital and limited access to institutional capital. Both BHP and Rio Tinto publish detailed emissions-reduction roadmaps and invest in electrifying their mining equipment.

At the same time there is a paradox: without mining metals — copper, nickel, lithium, cobalt — it is impossible to build the infrastructure for the decarbonisation of the economy. Mining companies therefore stand on both sides of the energy transition: they are part of the problem (emissions, landscape destruction) and an indispensable part of the solution (materials for renewable energy). This ambivalence affects their valuations and makes sector analysis more complex than for companies with a cleaner profile. Investors must distinguish between mining for the fossil-fuel industry (thermal coal, oil sands) and mining of critical minerals for electrification. BHP and Rio Tinto actively communicate this distinction — they sold off coal and emphasise their expansion into critical minerals to remain investable for ESG-oriented funds. This is a practical example of how ESG is not just an ethical label but a factor affecting access to cheap capital.