CAC 40 Rises as US-Iran Diplomatic Hopes Ease Energy Tensions

The CAC 40 index advanced 0.59% to 8,284.34 on Tuesday, driven by optimism that the U.S. and Iran are moving toward a ceasefire. U.S. President Donald Trump indicated that Tehran has reached out to initiate discussions, with reports suggesting Turkey is mediating to bridge differences between the two nations. This diplomatic thaw has significantly reduced immediate fears of energy supply disruptions. Brent crude futures reflected this sentiment, dipping to $96.50 per barrel earlier in the session before recovering to $98.75, though they remained below the previous closing level. Corporate activity provided additional momentum. Eurofins Scientific shares jumped more than 5% after the company signed an agreement to sell its electrical and electronic testing unit to UL Solutions. Similarly, Stellantis and Saint Gobain saw gains of 2.9% and 2.75%, respectively. Publicis Groupe reported a 6.4% increase in first-quarter 2026 revenue, reaching Euro 4.1 billion. While net revenue growth of 4.5% was a slight decrease from the previous year's 4.9%, the company maintained a full-year net revenue growth forecast in the 4-5% range. Conversely, LVMH shares declined approximately 2% after the luxury group posted a 6% annual drop in Q1 revenue. The company specifically warned that the ongoing conflict with Iran reduced group sales by at least 1% during the latest quarter.