Exxon Mobil, Chevron, BP, ConocoPhillips, Schlumberger, Halliburton, Occidental and Callon fell between 3% and 9%.
Oil prices slipped as investors eyed talks at the European Union on a Russian oil embargo that is expected to tighten global supplies.
Exxon Mobil, Chevron, BP, ConocoPhillips, Schlumberger, Halliburton, Occidental and Callon fell between 3% and 9%.
Oil prices slipped as investors eyed talks at the European Union on a Russian oil embargo that is expected to tighten global supplies.
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