New York, March 27, 2026, 11:13 EDT
New York-listed Rio Tinto plc shares rose 1.1% to $86.75 by 10:58 a.m. EDT on Friday, as investors weighed an A$2 billion support package for its Boyne aluminium smelter in Queensland and a sharp jump in benchmark Asian aluminium premiums. The gain came even as global equities stayed under pressure. 1
The move matters now because Rio is trying to secure cheaper, steadier power for aluminium just as war-driven shipping risks and higher oil prices unsettle commodity markets. Japan’s quarterly premium is the regional yardstick for metal sold above London Metal Exchange cash prices, so the jump feeds quickly into expectations for the prices Rio can actually charge. 1
Under the Queensland deal announced this week, the Commonwealth and Queensland governments will each invest A$1 billion over 10 years, while Rio underwrites close to A$7.5 billion of new renewable generation and transmission. Rio said the package should keep Boyne, Australia’s second-largest aluminium smelter, running beyond its 2029 power contract and through at least 2040, protecting about 1,000 onsite jobs and another 2,000 indirect roles in Gladstone. 1
Rio aluminium and lithium chief Jérôme Pécresse called the arrangement a “transformative partnership” that could place Boyne among the first smelters backed by solar and wind power. Armando Torres, managing director of Rio Tinto Pacific Operations, told reporters the site now had a “strong long-term future” to at least 2040. 2
The timing helps. Japanese buyers agreed to pay an aluminium premium — an extra fee on top of LME cash prices — of $350 to $353 a metric ton for April-June shipments, up 79% to 81% from the prior quarter and the highest since 2015, after the Middle East conflict tightened supply and rattled cargo flows through the Strait of Hormuz. Reuters reported Rio and South32 were among the producers in the talks. 3
Rio also put out a fresh investment signal on Friday. The miner said development of replacement mines in the Pilbara pushed spending with Western Australian suppliers to a record A$12.1 billion in 2025, A$1.8 billion more than a year earlier, with Western Range opened and Brockman Syncline 1, Hope Downs 2 and West Angelas still under construction. Iron ore chief Matthew Holcz said Rio remained “committed” to local businesses. 4
Rio’s advance was solid, but it was not unusual across miners. BHP’s New York-listed shares were up 1.9% and Vale rose 1.6% around the same time, even as broader global stocks slid again and Brent crude traded near $110.70 a barrel. 5
Still, the backdrop is shaky. Hargreaves Lansdown analyst Matt Britzman said on Friday that “words alone aren’t cutting it” for markets, and the same oil shock lifting aluminium premiums is also feeding inflation and borrowing-cost worries. 5
Rio also has company-specific execution risk. Katie Jackson, who runs copper, told Reuters this week that the group wants its Resolution project in Arizona running in the early-to-mid 2030s, but warned that “the current structures don’t support the Kennecott smelter,” signalling that turning concentrate into usable metal in the United States remains tough. 6
That leaves Rio with a mixed picture beneath Friday’s gain: stronger aluminium pricing, firmer power backing in Queensland, and a copper expansion story that still depends on getting tougher processing economics to work. 3
