London's blue-chip index retreated on Thursday morning, with the FTSE 100 falling 0.48% to 10,825.46 by 08:50 BST, pressured by weakness in heavyweight energy and mining stocks. The decline came despite a strong hand-off from Wall Street, where Nvidia's upbeat earnings had lifted global tech sentiment.
The FTSE 250, by contrast, showed resilience, dipping just 0.02% to 24,893.36, while the FTSE All-Share slipped 0.40% to 5,843.40. Small-cap stocks outperformed, with the FTSE SmallCap index edging up 0.07% to 8,232.39, suggesting the sell-off was concentrated in large-cap commodity names rather than a broad market downturn.
Commodity Heavyweights Drag
Oil majors led the decline, with Shell falling 1.29% and BP dropping 0.90%, as crude prices extended their slide. Brent crude was down 0.5% at $87.40 per barrel, marking a fourth consecutive session of losses amid renewed diplomatic efforts to de-escalate the US-Iran conflict. While easing geopolitical tensions support global risk appetite, they reduce earnings leverage for London's oil producers.
Mining stocks also came under pressure, with Glencore tumbling 2.20% and Rio Tinto losing 1.18%. Glencore's decline was exacerbated by its ex-dividend date, while broader weakness in the sector reflected concerns about global demand. Other notable laggards included LondonMetric Property, down 2.16%, and chemicals firm Croda, which slipped 1.88%.
Tech Pockets Shine
Despite the overall market weakness, technology-related stocks found buyers. Computacenter surged 4.12%, leading the FTSE 350, as investors bet on continued AI-driven demand for IT infrastructure. Polar Capital Technology Trust added 1.40%, benefiting from Nvidia's stellar quarterly results, which showed revenue more than doubling year-over-year and guidance exceeding analyst expectations.
The divergence between the tech rally and commodity-led losses highlights the FTSE 100's heavy weighting toward energy and mining, which together account for a significant portion of the index. In contrast, the FTSE 250's more domestic focus helped it hold near the flatline.
Market Outlook
Investors are now looking ahead to key US economic data, with weekly jobless claims due at 13:30 BST. Consensus forecasts 208,000 new claims, slightly above the previous week's 206,000. Later on Friday, Federal Reserve Chair Kevin Warsh is scheduled to speak at Jackson Hole, where his remarks on the rate path and inflation will be closely scrutinized.
Oil diplomacy remains a watchpoint, as any further progress in US-Iran talks could quickly move energy stocks and the broader FTSE 100. The immediate bear case would see Brent breaking lower and miners extending losses, potentially pushing the FTSE 100 below its session low of 10,824.25. Conversely, a recovery through the opening high of 10,878 would reverse the weak early read.
Data for this report was observed at 08:50 BST on 27 August 2026, with index and equity quotes delayed by at least 15 minutes. Cross-asset prices are Reuters observations from 06:34 BST.
