London, May 16, 2026, 17:05 BST
Rio Tinto plc heads into Monday under pressure after its London-listed shares slid 4.76% on Friday to 7,766 pence, underperforming a 1.71% fall in the FTSE 100 and leaving the miner below this week’s 52-week high — the highest price reached over the past year.
The market is shut now, not just quiet. The London Stock Exchange trades Monday to Friday from 0800 to 1630 local time, so Saturday’s question is what investors do with a stock that broke hard after making a fresh high.
Why it matters now is the speed of the turn. Rio closed May 8 at 7,704p, climbed as high as 8,275p on Wednesday, and finished Friday at 7,766p, leaving the week with only a small gain after a sharp midweek rally.
The broader London tape did little to cushion it. The FTSE 100 closed Friday at 10,195.37, down from 10,233.07 a week earlier, so Rio’s weekly move looked less like a clean breakout and more like a failed push through the highs.
Metals were the immediate pressure point. Copper, often treated as a read on industrial demand because it is used in power, construction and data-centre buildouts, fell 4.81% on May 15, while iron ore slipped 0.32% to $110.77 a tonne.
The weakness was not just a London story. In Australia on Friday, miners retreated 3.1% as softer iron ore and copper hit the sector; BHP fell 2.6% and Rio’s Australian line dropped 3.2%, easing from record highs struck in previous sessions.
Rio’s operating backdrop is not weak on the latest company update. In April, the company maintained its 2026 Pilbara iron ore sales forecast at 323 million to 338 million tons, while first-quarter mined copper output rose to 229,000 tons from 210,000 tons a year earlier.
It also reported a 9% year-on-year rise in copper equivalent production, a measure that converts output from different commodities into a copper-based yardstick. Chief Executive Simon Trott said Rio’s “stronger, sharper, simpler” programme was “moving at pace,” with the first $650 million of annualised benefits fully implemented. Rio Tinto
That is why investors have not walked away from the sector. BlackRock portfolio manager Evy Hambro told Reuters the shift into hard assets looked like “the early stages of a commodity supercycle” and said “The material intensity of GDP is rising.” Harding Loevner portfolio manager Anix Vyas said “Copper is very much in demand,” citing Rio’s exposure to copper and aluminium. Reuters
Fresh company news was governance, not output. Rio said on Thursday it had appointed BP legal executive Trudi Charles as chief legal officer, governance and corporate affairs, succeeding Isabelle Deschamps from Aug. 1.
But the cautious Monday read can go wrong either way. Goldman Sachs kept its 2026 copper price forecast at $12,650 a metric ton in April and warned that prolonged disruption around the Strait of Hormuz, plus China’s sulphuric acid export ban, could tighten a key input for copper production; that could support copper, but higher oil and supply-chain stress would also raise costs and inflation risks.
For Monday, the first test is simple: whether buyers defend Friday’s low near 7,697p. A support level means a price where buyers have recently appeared; if it fails, sellers often press the move. A recovery back above 8,000p would steady the chart, but if copper and iron ore stay soft before London opens, the near-term forecast is a nervous, flat-to-lower start with Rio still vulnerable to more profit-taking.
