A Forbes article published Tuesday quoted Vicki Hollub, the oil company’s chief executive, as saying a buyout by Warren ...

The upstream energy giant faces some unpredictable challenges.

Occidental Petroleum (OXY) closed at $40.35 in the latest trading session, marking a -0.39% move from the prior day. This change lagged the S&P 500's 0.58% gain on the day. Elsewhere, the Dow gained 0 ...

Occidental Petroleum’s conventional oilfields in the Permian basin of west Texas have been producing for decades.