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Just months after becoming a publicly traded company, Nikola Corp. reported that net losses widened versus year-ago levels as the company continues investing in the buildup toward the introduction of its electric trucks.

Wilks Brothers has made a competing proposal to recapitalize struggling energy company Calfrac Well Services Ltd. and criticized management’s deal as favoring insiders.

Range Resources Corp. is selling its Louisiana shale fields for about one-tenth of what it paid for them just four years ago as depressed natural gas prices hammered the heavily indebted driller.

Diesel fell for the third consecutive week, by three-tenths of a cent to $2.424 a gallon.

Oil rose the most in nearly two weeks as economic data from the U.S. to Europe and Asia signaled a flicker of life in languishing demand.

Fisker Inc. missed a self-imposed deadline for a technology-sharing deal with Volkswagen AG that the electric-vehicle startup had described as key to cutting costs.

Offshore drilling contractor Noble Corp. filed for bankruptcy with a plan to cut more than $3.4 billion of debt.

General Motors Co. is working with electric-vehicle charging operator EVgo Services to build a nationwide fast-charging infrastructure.

Oil is set to eke out a monthly gain, yet futures lost steam on July 31 amid threats that the market will soon become oversupplied.