CNBC | US crude oil dives 6% to fresh one-year low as stock market slides CNBC Oil prices dropped sharply on Tuesday, snapping a four-day winning streak amid concerns about rising global supplies as OPEC weighs a possible cut in production. Growing fears of an economic slowdown, which saw global stock markets tumble again, ... Oil loses steam as supply concerns add to negative economic outlook Oil Slides Further on Oversupplied Outlook Oil Resumes Slide as Fears Persist Over Looming Supply Surplus |