Investor's Business Daily | Five Reasons Why Oil Prices Hit A 2018 Low On Black Friday Investor's Business Daily Crude oil prices tumbled Friday as fears of an oil glut and slowing economic growth continue despite assurances Saudi Arabia will cut production. Brent crude oil futures tumbled 5% to $59.45 per barrel, undercutting $60 for the first time since October ... Energy companies lead US stocks lower as oil prices tumble At the open: TSX dips with oil prices |