September futures WTI crude oil fell below $40 a barrel, according to the auction. As of 19:31 at a cost of $39,88.
Such mark WTI has broken for the first time since April 20.
At the same time, the October futures of Brent crude oil during the bidding broke $42 to $41,97 per barrel. As of 19:45 GMT the cost is $42,02.