* U.S. stock indexes mostly down slightly * Oil prices gain as Iran worries continue * Longer-dated U.S. Treasury yields off recent highs (Updates to midday) By Caroline Valetkevitch and Samuel Indyk NEW YORK/LONDON, May 18 (Reuters) - Major stock indexes mostly eased as technology shares fell on Monday, while oil prices climbed following more worries over supply disruption from...

11:50 AM EDT, 05/18/2026 (MT Newswires) -- The European stock markets were tracking higher in Monday trading as oil prices and interest rates track higher, while hostilities in the Middle East appear close to reigniting after President Trump warned Iran that the clock is ticking on a peace deal. The Stoxx Europe was rising 0.4%, Germany's DAX was up 1.3%,...

11:11 AM EDT, 05/18/2026 (MT Newswires) -- European equities traded in the US as American depositary receipts were heading higher late Monday morning, rising 0.88% to 1,825.10 on the S&P Europe Select ADR Index. From continental Europe, the gainers were led by biotech firm Evaxion ( EVAX ) and healthcare tech company Royal Philips (PHG), which rose 4.6% and 2.9%...

May 18 (Reuters) - UK's blue-chip FTSE 100 gained on Monday, lifted by energy stocks tracking higher crude oil prices, while the more domestically focused midcap index was subdued amid concerns about inflation and Prime Minister Keir Starmer's future. The FTSE 100 ended 1.3% higher at 10,323.8 points, while the FTSE 250 ended 0.07% lower after falling as much 0.7%...