AdvertisementAdvertisementTraders work on the floor at the New York Stock Exchange in New York, Thursday, Mar 19, 2026. (Photo: AP/Seth Wenig)21 Mar 2026 04:43AM (Updated: 21 Mar 2026 04:56AM) Bookmark Bookmark WhatsApp Telegram Facebook Twitter Email LinkedInAdd CNA as a trusted source to help Google better understand and surface our content in search results.Read a summary of this article on FAST.Get bite-sized news via a newcards interface. Give it a try.Click here to return to FAST Tap here to return to FASTFAST NEW YORK: Stocks tumbled while oil prices pushed higher Friday (Mar 20) at the end of a turbulent week in which attacks on Gulf energy infrastructure rattled global markets and sparked fears of a global economic slowdown.Crude prices jumped further on Friday, with the international benchmark, Brent crude, rising 3.3 per cent on Friday to nearly US$112.19 per barrel. The main US contract, West Texas Intermediate, rose 2.3 per cent to over US$98 per barrel.Angelo Kourkafas of Edward Jones, said this week's assaults on energy infrastructure deepened the market's concerns."What really matters more is not how high prices are now, but how long prices may stay high, and I think it's that uncertainty that is triggering the volatility," he said.Coming into this week, investors were anxious over the near-closure of the Strait of Hormuz, through which about 20 per cent of the world's crude oil and liquefied natural gas flow.Early Friday, drone attacks caused fire at Kuwait's Mina Al-Ahmadi oil refinery.Energy analysts and consumers are also scrambling to count the cost of Iranian missiles hitting Qatar's huge Ras Laffan natural gas complex on Thursday. The attack caused "extensive damage" that Qatar's state energy company said could cost US$20 billion a year in lost revenue and take five years to repair."Heading into a weekend, investors are unsurprisingly a bit nervous about what may happen, of course nobody knows how it's going to play out," said Kourkafas, who pointed to the rise in government bond yields as a sign markets are more worried about inflation.US to deploy thousands of additional troops to the Middle East, officials sayUS stocks cut losses on Netanyahu war comments as energy prices soar againAll three major US indices finished lower Friday, with the broad-based S&P 500 losing 1.5 per cent.US Federal Reserve Governor Christopher Waller on Friday expressed concern about inflation in light of the war.Waller, who has since last year backed interest rate cuts over labour market concerns, said he changed his mind in the last two weeks on the pace of easing due to inflation risks."Since that time the Strait of Hormuz was closed, this is looking like it's going to be a much more protracted conflict, and oil prices are going to stay high for a longer time," he told US broadcaster CNBC on Friday."So that suggested inflation was more of a concern than I was putting it."Source: AFP/fsNewsletterWeek in ReviewSubscribe to our Chief Editor’s Week in ReviewOur chief editor shares analysis and picks of the week's biggest news every Saturday.Sign up for our newslettersGet our pick of top stories and thought-provoking articles in your inboxSubscribe hereGet the CNA appStay updated with notifications for breaking news and our best storiesDownload hereGet WhatsApp alertsJoin our channel for the top reads for the day on your preferred chat appJoin hereAlso worth readingContent is loading...Expand to read the full storyGet bite-sized news via a newcards interface. Give it a try.Click here to return to FAST Tap here to return to FASTFAST