Key facts
- Energy stocks gained 16.5% in Q3 2026, outperforming the S&P 500's 2.0% return.
- Refining companies Marathon Petroleum, Phillips 66, and Valero Energy returned an average of over 52% in Q3.
- Integrated oil companies gained an average of 19.9% in Q3.
- Exploration and production companies averaged 13.1% in Q3.
- Midstream companies returned 12.0% on average in Q3.
- US natural gas futures declined 7.6% during Q3.
The energy sector experienced a significant turnaround in the third quarter of 2026, posting a 16.5% gain that far surpassed the S&P 500's 2.0% return. This strong performance was largely driven by the refining segment, which benefited from tightening global fuel markets and disruptions to refining capacity.
Refiners, such as Marathon Petroleum, Phillips 66, and Valero Energy, saw average returns exceeding 52%. Their profitability is tied to crack spreads, the difference between crude oil costs and refined product values, which widened considerably due to supply constraints for products like diesel. Other refiners like PBF Energy, CVR Energy, and HF Sinclair also posted substantial gains.
Integrated oil companies, which have exposure to both upstream (production) and downstream (refining) assets, delivered an average return of 19.9%. Chevron and Shell were among the top performers in this group. Exploration and production companies averaged a 13.1% gain, though performance diverged, with oil-focused producers generally outperforming natural gas-focused ones. U.S. natural gas futures fell 7.6% in the quarter.
The midstream sector, typically associated with pipeline operators, averaged a 12.0% return but showed a stark split. Tanker and marine transportation companies like Dorian LPG and Frontline saw significant gains due to disrupted trade routes and increased shipping demand. In contrast, traditional pipeline operators such as Enbridge and TC Energy experienced declines, partly due to rising interest rates making their income-oriented characteristics less attractive.