Rio Tinto delivered a cracking result. Is there more upside from here?

Few companies provide a clearer window into the global resources sector than Rio Tinto (ASX: RIO). As one of the world's largest diversified miners, its fortunes are tied to some of the economy's most important commodities, including iron ore, copper and aluminium, making its results a closely watched barometer for both commodity markets and global growth.

Rio's first-half result was stronger than expected. Underlying earnings rose 43%, EBITDA increased 28%, and free cash flow surged 75%, allowing the miner to lift its interim dividend 43%. 

Chief Executive Simon Trott described the result as a "step-change in performance", adding that Rio's growing exposure to copper, aluminium and lithium meant those businesses now contribute more than 50% of underlying EBITDA, underscoring the company's ongoing shift away from its traditional reliance on iron ore.

To understand what these results mean for investors, I spoke with Michael Slack, Director of Research, Australian Equities at ClearBridge Investments.

Key results - FY26 (US$)

Company:

• Revenue: $31.0 billion (vs consensus $32.6 billion)
• Underlying EBITDA: $14.8 billion (in line with consensus)
• Underlying earnings: $6.85 billion (slightly ahead of consensus)
• Interim dividend: US$2.11/share (vs consensus US$2.09)
• Net debt: $14.1 billion (better than consensus $15.3 billion)
• Capex (Rio share): $5.0 billion (vs $4.5 billion in H1 FY25)

Divisional highlights:

• Iron ore EBITDA: $6.8 billion (slightly below consensus)
• Copper EBITDA: $5.7 billion (well above consensus)
• Aluminium & Lithium EBITDA: $3.3 billion (broadly in line with consensus)

Guidance / Outlook:

• FY26 production guidance unchanged across all major commodities.
• Iron ore sales: 343-366Mt
• Copper production: 800-870kt
• Pilbara unit cash costs: US$23.5-25.0/wmt
• Expected underlying earnings tax rate reduced to ~25% (from ~30% previously).
• Management remains on track to unlock US$5-10 billion of cash through portfolio optimisation, infrastructure and other initiatives, with around US$5 billion targeted by the end of 2026.

Do you currently hold RIO and what is your rating?

We do hold Rio in our income funds. Our rating is Hold.

What matters from the results?

This was a really strong first-half result from Rio. Commodity prices were obviously a key driver, contributing the lion's share of the 28% year-on-year earnings growth, but productivity was also a standout.

The company has been focused on taking costs out of the business and improving production through better productivity and asset utilisation, and that was clearly evident in the result.

The other key highlight was free cash flow. While earnings were up 28%, free cash flow increased 75%. Some of that reflects the timing of cash outflows, but it also demonstrates Rio's ability to generate more cash from its asset base. 

With production continuing to improve, that should continue to support stronger free cash flow.

How do those outcomes affect the outlook?

Our focus is on sustainable, strong returns to shareholders.

The improvement in free cash flow and the ongoing strengthening of the business give Rio greater flexibility. 

It allows the company to continue rewarding shareholders while also investing for growth as it positions itself to benefit from the long-term structural trends it's targeting.

What should investors be paying attention to as the story unfolds?

Commodity markets are currently buoyant, although commodity prices never move in a straight line. Supply and demand naturally fluctuate over time.

Over the longer term, Rio appears well positioned to continue generating strong cash flows from today's commodity markets while also growing its asset base to meet future demand.

The challenge from a valuation perspective is that several of Rio's key commodities, particularly copper, aluminium and lithium, are currently trading above what many investors would consider long-term prices. 

That doesn't necessarily make the long-term outlook negative, but it does make valuation more demanding.

What could you be wrong about?

The structural themes of electrification, decarbonisation and, increasingly, data infrastructure are all powerful demand drivers for commodities such as copper, aluminium and lithium.

The key question is how much additional demand these themes will ultimately create. 

We could be overestimating the extent to which this new demand adds to traditional sources of demand, rather than simply replacing them.

There's also the supply side to consider. Producers around the world are all looking to expand in commodities like copper and lithium. At today's prices, that creates a strong incentive to bring on new supply, which could eventually lead to oversupply.

That's why it's important to keep a close eye on both the evolution of demand and how quickly new supply comes to market.