Rio Tinto Group

The Business

Rio Tinto is the world's second-largest diversified miner, generating US$63 billion in segmental revenue across three divisions. Iron ore from the Pilbara (46% of revenue) remains the profit engine, producing 326 million tonnes in FY25 at an industry-leading cash cost of US$23.50 per wet metric tonne. Copper (22% of revenue) is the growth division, anchored by the Oyu Tolgoi underground mine in Mongolia and a 30% stake in Chile's Escondida. Aluminium and lithium (27% of revenue) round out the portfolio, with smelters across Australia, Canada, and New Zealand, plus the recently acquired Arcadium lithium platform. The company reports in US dollars but trades on the ASX in Australian dollars, which means currency movements affect returns independently of the business.

Recent Performance

RIO shares have risen roughly 30% over the past twelve months, driven by copper's surge to near-record prices and a Middle East conflict premium lifting aluminium. FY25 revenue grew 9% to US$62.6 billion, off a base that itself declined 4% in FY24, making the rebound partly a recovery from weather disruptions rather than pure momentum. EBITDA rose 9% to US$25.4 billion, though margins held flat at 40.5% as cost inflation absorbed the commodity price uplift.

Outlook

We forecast segmental revenue growing 5.2% in FY26 to US$65.9 billion, driven by iron ore's recovery toward US$98 per tonne and initial volumes from the Simandou mine in Guinea. Growth then moderates to around 2% annually as commodity prices converge toward mid-cycle levels. The more powerful story is on the cost side: capital expenditure peaks near US$12 billion this year and declines toward US$8 billion as Simandou and Oyu Tolgoi complete their ramp-up phases. That capex normalisation drives free cash flow from US$7.2 billion in FY25 to an estimated US$11 billion by FY28, a structural shift rather than a cyclical one.

Key Risks

Rio Tinto's own Simandou project adds 120 million tonnes per annum of iron ore into a market where China's construction demand is structurally declining. China's property prices have fallen for 33 consecutive months, and port iron ore inventories sit at 161 million tonnes, near the all-time record. If iron ore settles below US$80 per tonne, the earnings impact on a business that derives half its revenue from the commodity would be material. Copper sits at the 97th percentile of its historical range, inflated by a Middle East conflict premium that could reverse if geopolitical conditions normalise. The US$6.7 billion Arcadium lithium acquisition, made at cycle trough with no breakeven timeline, carries meaningful probability of partial write-down if lithium carbonate equivalent prices stay below US$12,000 per tonne.

What to Watch

The thesis-defining event is the trajectory of Middle East tensions over the next 6 to 18 months, which simultaneously affects copper, aluminium, and energy pricing. A ceasefire could remove US$1,500 to US$2,000 per tonne from copper and normalise aluminium premiums, compressing RIO's earnings from two segments at once.

• July 2026 H1 results with first full period of Simandou revenue — will confirm both the production ramp profile and, critically, what the additional supply does to iron ore spot pricing.
• 2027-2028 OT underground ramp to 500ktpa confirmed — 80% probability; adds roughly US$3 billion in EBITDA at mid-cycle copper prices.

Company Description

Rio Tinto operates through three reportable segments. Iron Ore, overwhelmingly the Pilbara operations in Western Australia, shipped 326 million tonnes in FY25 and contributed US$29 billion in revenue. Copper spans three major assets: the 66%-owned Oyu Tolgoi in Mongolia, the wholly owned Kennecott mine in Utah, and a 30% stake in BHP-operated Escondida in Chile, together generating US$13.7 billion. Aluminium and Lithium includes bauxite mines, alumina refineries, and aluminium smelters across four countries, plus the newly acquired Arcadium lithium platform, contributing US$17.1 billion. The company is dual-listed in London and Sydney with 1,625 million shares outstanding, all carrying equal economic rights. Revenue concentrates heavily in China (approximately 55% of group), making Chinese demand the single largest external dependency.

Where the Growth Is

Copper is the growth engine. The segment contributed 29% of group EBITDA in FY25, up from roughly 15% in FY24, as Oyu Tolgoi's underground operation ramped production. Copper volumes are forecast to grow from 883 thousand tonnes to 1,050 thousand tonnes by FY28, with OT targeting 500 thousand tonnes per annum at lowest-quartile cash costs of 67 US cents per pound. This segment is where Rio Tinto's portfolio transformation from an iron ore company to a diversified miner either succeeds or stalls.

Competitive Position

Rio Tinto's Pilbara iron ore infrastructure, comprising mines, rail, and port facilities with 345 million tonnes of annual capacity, would cost over US$20 billion to replicate. That infrastructure delivers a US$5 to US$7 per tonne cost advantage over most seaborne competitors. Three companies (Rio, BHP, and Vale) control roughly 74% of global seaborne iron ore, creating an oligopoly structure where new entrants face a decade-long capital commitment before first shipment. In copper, OT's underground block cave is a generational asset with a 90-plus-year mine life and costs well below the industry median. The competitive advantages are deeply embedded in physical geology and infrastructure, unlikely to erode within a decade. The trajectory is stable: market positions are holding or strengthening as OT ramps and Simandou adds a new pillar.

Management & Capital Discipline

Rio Tinto maintains a disciplined 60% ordinary payout ratio, returning US$6.5 billion in dividends in FY25. The US$650 million productivity programme has been delivered in full, holding Pilbara unit costs flat at US$23.50 per wet metric tonne despite diesel at US$108 per barrel and Western Australian wage growth of 3-4% annually. Capital allocation has been ambitious: the US$6.7 billion Arcadium acquisition at lithium cycle trough is a bold bet that remains unproven, while the failed bid for Anglo American signals appetite for transformative M&A. New CEO Bold Baatar (appointed early 2025) brings operational depth from leading the copper division through OT's completion but is strategically untested with less than nine months in the role. One honest observation: management consistently frames Simandou as value-accretive without addressing its structural impact on iron ore pricing, a notable silence given iron ore still generates half of group revenue.

Financial Position

Net debt sits at US$13.1 billion, equating to 0.57 times EBITDA, a comfortable level for a cyclical business. The balance sheet carries an investment-grade credit rating with an 11-year weighted average debt maturity. Interest coverage exceeds 10 times. Closure and rehabilitation provisions total US$17.8 billion, a large but long-dated liability funded through ongoing operations at roughly US$1 billion per year. Rio Tinto can weather a sustained commodity downturn: at US$70 per tonne iron ore and US$8,000 per tonne copper, EBITDA still covers debt service by more than four times. The constraint is not survival but optionality: the current capex burden limits buyback capacity until Simandou and OT complete.