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The S&P 500 slipped 0.1% as the United States, Iran, and Israel\u00a0disagreed on the details of their two-week ceasefire<\/a>, whose announcement had sent markets flying in optimism on Wednesday. The Dow Jones Industrial Average was down 40 points, or 0.1%, as of 10 a.m. Eastern time, and the Nasdaq composite was 0.2% lower.<\/p>\n The oil market was jumpier, and the price for a barrel of benchmark U.S. crude oil climbed 6.8% to $100.79. It rose after semiofficial news agencies in Iran suggested forces have mined the\u00a0Strait of Hormuz<\/a>, the narrow waterway that has been at the center of President Donald Trump\u2019s demands of Iran. Blockages there have kept oil and natural gas stuck in the Persian Gulf, away from customers worldwide.<\/p>\n Brent crude, the international standard, rose 3.7% to $98.24 per barrel. It\u2019s well below the $119 level that it briefly reached when worries about the war reached their height, but it\u2019s still well above its roughly $70 level from before the war.<\/p>\n<\/div>\n Given how far apart the United States and Iran seem to be in their demands, upward pressure on oil prices may be \u201chere to stay for a while,\u201d according to strategists at Macquarie led by Thierry Wizman. Risks remain for renewed fighting, which could cause customers worldwide to hoard whatever oil supplies they do get. That could itself keep oil off the market, much like actual fighting targeting pipelines or oil tankers.<\/p>\n On Wall Street, Simply Good Foods tumbled 15.1% after the company behind the Quest and Atkins brands reported a worse drop in revenue than analysts expected. CEO Joe Scalzo called the results unsatisfactory and said the company is making immediate changes to turn around its performance.<\/p>\n Constellation Brands rallied 5.3% for one of the market\u2019s bigger gains after reporting stronger results for the latest quarter than analysts expected. The company, which sells Modelo beer and Robert Mondavi wines, said it saw encouraging trends heading into its new fiscal year. But given \u201climited near-term visibility,\u201d it pulled its financial forecasts for the following fiscal year.<\/p>\n<\/div>\n