REUTERS Brent had fallen 78 cents to $52.69 a barrel by 08:21 GMT, having hit a session low of $52.28, its lowest since early February, bringing the losses for July to nearly 18%, Reuters said. Brent crude is on track for its longest stretch of daily losses since March, when the price hovered just dollars away from six-year lows. U.S. crude was last down 36 cents at $47.03 a barrel after ending the previous session down 75 cents. Investors are watching for weekly data on U.S. inventory levels to gauge the strength of demand. U.S. commercial crude oil stocks likely slipped last week after crossing the five-year seasonal average build in the previous week, a preliminary Reuters poll of analysts showed ahead of industry and official weekly reports. Crude stocks fell about 300,000 barrels to 463.6 million barrels in the week ended July 24, analysts estimated.