The oil and gas industry plays a vital role in the global economy, supplying the primary energy source for transportation, ...

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 ...