Energy giants were mixed at the market open Tuesday. West Texas Intermediate crude oil for August delivery was down $0.01 at $57.89 per barrel at the New York Mercantile Exchange. The global benchmark Brent crude August contract gained $0.24 to $65.10 per barrel and July natural gas futures were 1 cent lower at $2.29 per 1 million BTU. Among energy-related ETFs, the United States Oil Fund was up 0.58%, while the United States Natural Gas fund was 1.12% lower.

Stocks moving on news include:

(-) Occidental Petroleum (OXY), which was down 0.4%, after it said it is looking to sell a majority control of Western Midstream Partners (WES), which was up 0.6%, a pipeline operator that the company will own through its takeover of Anadarko Petroleum (APC), according to a report by Bloomberg News.