The ‘Xin Run Yang’ oil tanker, operated by Cosco Shipping Holdings Co., rides its mooring while being loaded with crude oil near Saudi Aramco’s Ras Tanura oil refinery, in Ras Tanura, Saudi Arabia. (Photographer: Simon Dawson/Bloomberg)

Oil Slips Most in a Month Amid U.S. Supply Boost, Demand Warning

(Bloomberg) -- Oil suffered its worst loss in more than a month as burgeoning U.S. crude supplies and a cautious view on demand flashed warning signs for traders.