Middle East tensions centred on Iran — specifically, pessimism over a US-Iran deal to reopen the Strait of Hormuz — were the dominant macro driver on Monday 17 August, pushing WTI crude up 2.55% to $84.50/bbl and Brent up 2.65% to $90.87/bbl. These moves carried clear inflationary implications: US 10-year Treasury yields rose 5bp to 4.68% and 2-year yields rose 2bp to 4.17%, steepening the curve and reinforcing expectations that the Federal Reserve will maintain a data-dependent, cautious policy stance heading into upcoming retailer earnings and Fed minutes releases. Gold extended its advance to $4,417.80/oz (+0.85%), silver rose 1.74% to $66.12/oz, and the VIX fell 2.60% to 14.25 — suggesting equity markets absorbed the oil shock with relative calm near record levels, even as the S&P 500 slipped 0.17%.
For European investors, the oil surge is a direct headwind via energy-import costs and pass-through inflation risk, with the ECB already projecting headline inflation averaging ~3.0% for 2026 and holding its deposit rate at 2.25% post the June 25bp hike. Dutch TTF gas futures closed at 62.51 EUR/MWh (+1.20%) and UK NBP gas at 153.0p/therm (+1.10%), keeping European power prices elevated — German Power at 120.55 EUR/MWh. The EUR/USD strengthened 0.34% to 1.1574 and GBP/USD rose 0.42% to 1.3547, both benefiting from a softer DXY (99.67, -0.29%), though the EUR/GBP was essentially flat at 0.8544 (-0.06%), reflecting broadly parallel dollar weakness rather than a divergence in UK versus eurozone fundamentals. Cross-asset pressure was most concentrated in rate-sensitive and energy-intensive European sectors: Construction fell 1.47%, Healthcare dropped 0.98% led by Merck KGaA (-2.29%) and Lonza Group (-1.78%), while Food & Beverage declined 1.36%; on the other side, Travel & Leisure (+0.62%), Utilities (+0.53%), and Basic Resources (+0.48%) led the gainers, with the DAX outperforming at +0.53% against broader European index weakness.