Daily Market Briefing — 26 March 2026

Market Recap

Wednesday's rally was built on hope rather than hard evidence. The S&P 500 gained 0.54% to close at 6,591.90, the Nasdaq 100 rose 0.67% to 24,162.98, and the Dow Jones climbed 0.66% to 46,429.49 as traders priced in a potential resolution to the US-Iran war. But the optimism may be premature — President Trump claimed the US and Iran are "in negotiations now," yet Iran's foreign minister denied any direct talks are taking place. That disconnect could spark volatility when London opens at 8am.

Key Movers & Themes

Supreme Court Slaps Down Trump Tariffs: In a 6-3 ruling, the Supreme Court determined Trump lacked authority under the International Emergency Economic Powers Act to impose tariffs. The president responded by saying Justices Barrett and Gorsuch "sicken me" — a rare public rebuke that adds political uncertainty to an already fragile market backdrop. Tariff policy remains in limbo.

Tech Divergence: Arm Holdings delivered its best day in a year as analysts suggested it could dominate the CPU market the way Nvidia has dominated GPUs. Meanwhile, Micron's stock dropped after Google introduced an algorithm that improves memory usage in AI models, raising questions about future demand for memory chips. Tesla continued to slide as options traders signal waning faith in the cult stock.

Social Media Liability Verdict: A Los Angeles jury found Meta and YouTube negligent in a landmark social media addiction trial, awarding $6 million to a plaintiff. The verdict, described as social media's "Big Tobacco moment," could have implications for hundreds of similar cases and may weigh on Meta's share price today.

The Big Question

Can markets hold these gains if Iran peace talks are a mirage? Bulls argue that even the prospect of diplomacy is enough to keep risk assets supported, and Wednesday's rally showed strong breadth across sectors. Bears counter that Trump's claim of negotiations directly contradicts Iran's denial, and that traders are setting themselves up for disappointment. With Trump now threatening to deploy more troops to pressure Iran into talks — a move analysts warn could backfire — the next headline could easily reverse Wednesday's optimism.

Economic Calendar — What to Watch Today

• 07:00 GMT — Germany GfK Consumer Confidence (Apr): Actual -28 vs forecast -26.5 (prev -24.8). German consumer sentiment deteriorated more than expected, a worrying sign for Europe's largest economy.
• 07:45 GMT — France Business & Consumer Confidence (Mar): Business confidence forecast at 100 (prev 102), consumer confidence forecast at 89 (prev 91). Both metrics expected to weaken.
• 12:30 GMT — US Initial Jobless Claims (Mar 21): Forecast 210k vs previous 205k. With recession odds climbing on Wall Street amid a labour market slump, any uptick in claims will be scrutinised closely.
• 20:00-23:10 GMT — Fed Speaker Parade: Four Fed officials speak this evening, including Cook, Miran, Jefferson, and Barr. Watch for any shift in tone on rate policy given the geopolitical backdrop.

The jobless claims print at 12:30 GMT is the headline event — economists have raised recession risk assessments, and the labour market is showing cracks beneath the surface.

Technical Levels to Watch

For the S&P 500, 6,620 is immediate resistance — a break above opens the door to 6,650 and potentially the 5-day high at 6,651.62.

Commodities & Currencies

Oil markets are in backwardation — a technical condition where near-term contracts trade above longer-dated ones, signalling tight supply. WTI gained 2.17% but Brent fell 3.11%, an unusual divergence that reflects regional supply dynamics. Gold and silver both sold off sharply as risk appetite returned, while the dollar strengthened across the board. UK inflation held at 3% in February, but that data was collected before the Iran war began — analysts warn a "brutal" surge could be coming as energy costs feed through.

Trading Outlook

Neutral with a bearish tilt if Iran headlines disappoint. Wednesday's rally was driven by hope, not confirmation, and the contradiction between Trump's claims and Iran's denial leaves markets vulnerable to a reversal. The US jobless claims print at 12:30 GMT is the catalyst that could flip sentiment if it shows labour market weakness. Manage risk tightly into the US open.