A potential mega-merger between Rio Tinto Ltd (LSE:RIO, ASX:RIO, OTC:RTNTF) and Glencore PLC (LSE:GLEN) is back in focus after a sweeping internal restructuring by the Swiss commodities group, which analysts at Citi say could ease the path to a transaction.
But they also caution that any deal would face significant valuation and strategic hurdles.
Glencore has transferred more than $30 billion of overseas assets into a single Australian entity, including its global coal portfolio and South African operations.
Prep work taking place
The move, disclosed in April filings and first reported by the Australian Financial Review, has been interpreted as a preparatory step to separate less desirable assets, including thermal coal, from core metals businesses.
Citi analysts said this reorganisation may lay the groundwork for a fresh approach to Rio Tinto, potentially reviving merger discussions last explored eight months ago.
In one scenario, Glencore could spin off its coal arm while Rio Tinto acquires the remainder, referred to as "Metalco" in Citi's note, giving Rio access to Glencore’s highly profitable trading division and strategic base metals assets.
However, for such a deal to succeed, Rio would likely need to pay a considerable premium. Glencore shares have underperformed Rio by nearly 30 per cent over the past 18 months, Citi noted, meaning a fair offer would have to recognise this disconnect.
$1 billion of synergies
Analysts estimate synergies would need to exceed $1 billion annually to justify the transaction.
A key attraction for Rio could be diversification into high-growth commodities such as copper, a metal critical to the global energy transition.
Glencore’s undeveloped Mara project in Argentina and its South African ferroalloys operations could complement Rio’s existing portfolio.
Yet challenges remain. Rio has historically avoided coal, which accounted for 38 per cent of Glencore’s 2023 earnings. Keeping that business ringfenced is likely to be a precondition for serious talks.
Leadership change at Rio may also shift the outlook. Outgoing chief executive Jakob Stausholm has been cautious on consolidation, but Citi notes some within Rio’s executive team appear more open to transformative deals.
Even if no tie-up materialises, the structure now in place gives Glencore strategic flexibility, either to spin off assets or court future suitors. The potential for sector consolidation remains alive.