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Oil, gas and energy stocks

There are 7 public portfolios of oil, gas and energy stocks on Arithmos, holding dozens of companies between them. The most widely held are Exxon Mobil Corporation (XOM), Chevron (CVX) and ConocoPhillips (COP). Over the year to 22 October 2026, the best performer was Global Multi-Sector Leaders — Momentum-Weighted Top 10 at +120.7%.

Energy portfolios and indexes

Returns to 22 October 2026

Most-held energy stocks

The companies chosen most often across these portfolios, and their average weight where they are held. This counts choices; it is not a recommendation.

  1. 1Exxon Mobil CorporationXOMin 7 of 714.2% avg
  2. 2ChevronCVXin 4 of 711.2% avg
  3. 3ConocoPhillipsCOPin 3 of 79.8% avg
  4. 4Equinor ASAEQNRin 3 of 77.8% avg
  5. 5EOG ResourcesEOGin 3 of 76.7% avg
  6. 6Occidental PetroleumOXYin 3 of 75.6% avg
  7. 7Shell PlcSHEL.Lin 2 of 78.0% avg
  8. 8TotalEnergies SETTE.PAin 2 of 77.8% avg
  9. 9Eni S.p.A.ENI.MIin 2 of 75.8% avg
  10. 10Marathon PetroleumMPCin 2 of 74.5% avg
  11. 11Phillips 66PSXin 2 of 74.5% avg
  12. 12Saudi Arabian Oil Co.2222in 1 of 753.4% avg
  13. 13Micron Technology, Inc.MUin 1 of 731.8% avg
  14. 14Advanced Micro Devices, Inc.AMDin 1 of 723.2% avg
  15. 15GEVGEVin 1 of 715.0% avg
  16. 16iShares MSCI Saudi Arabia ETFKSAin 1 of 714.0% avg
  17. 177011.T7011.Tin 1 of 713.0% avg
  18. 18Saudi Arabian Oil Co. (Aramco)2222.SRin 1 of 713.0% avg
  19. 196501.T6501.Tin 1 of 712.0% avg
  20. 20CATCATin 1 of 712.0% avg
  21. 21UNPUNPin 1 of 711.0% avg
  22. 22Petroleo Brasileiro SA (Petrobras)PETR3.SAin 1 of 711.0% avg
  23. 23CSXCSXin 1 of 710.0% avg
  24. 24PetroChina Co., Ltd. Class A601857.SSin 1 of 710.0% avg

What counts as oil, gas and energy stocks

Oil and gas stocks are the companies that find, produce, transport and refine oil and natural gas. The largest are integrated majors that do all of it; others specialise in drilling, pipelines, refining or the services that oilfields need.

Their profits rise and fall with energy prices, which makes the theme a common hedge against inflation and supply shocks. Many pay substantial dividends.

Integrated majors
Companies that explore, produce, refine and sell.
For example: ExxonMobil, Chevron, Shell, BP, TotalEnergies
Producers
Companies that drill for oil and gas.
For example: ConocoPhillips, EOG Resources, Occidental
Pipelines and refiners
Moving and processing oil and gas.
For example: Kinder Morgan, Williams, Phillips 66, Marathon Petroleum
Oilfield services
Drilling, equipment and engineering.
For example: SLB, Halliburton, Baker Hughes

Risks to know

  • Profits move with oil and gas prices, which can fall fast.
  • Climate policy may reduce long-term demand.
  • Some investors exclude fossil fuel companies.

Latest discussion

Energy stocks in the news

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Guides and articles

Questions about oil stocks

How do I invest in oil stocks?

You can buy a fund that tracks oil stocks, or choose the companies yourself. On Arithmos you describe the theme in a sentence and get a list of companies with a weight for each, the reason each was picked and a 10-year backtest. You then buy the shares at your own broker. Arithmos never holds your money or places trades.

What is an energy index?

An energy index is a list of energy companies with a set weight for each, chosen and weighted by fixed rules. Unlike an ETF it is not a fund you buy as one share: you buy the companies yourself, so there is no yearly fund fee, and you can change the rules or the companies.

Which oil stocks appear most often in Arithmos portfolios?

Across the 7 public portfolios on this page, the most widely held are Exxon Mobil Corporation (XOM, in 7), Chevron (CVX, in 4), ConocoPhillips (COP, in 3), Equinor ASA (EQNR, in 3) and EOG Resources (EOG, in 3). This counts how often each company is chosen; it is not a recommendation.

How have energy portfolios performed?

Over the year to 22 October 2026, the median energy portfolio on Arithmos returned +47.6%, against +14.4% for the S&P 500. The best was Global Multi-Sector Leaders — Momentum-Weighted Top 10 at +120.7%. Results before each portfolio was made are simulated from real past prices and leave out fees and taxes. Past performance is not a guide to the future.

Why do energy stocks pay high dividends?

Many oil and gas companies return a large share of their cash to shareholders when prices are high, rather than investing it all in new projects.

Make your own energy portfolio

Describe the idea in a sentence. Arithmos picks the companies, explains each one and backtests the result against the S&P 500.

Build your own

Portfolios are lists of shares built by Arithmos members and the Arithmos research team, not funds. Results before a portfolio’s creation date are simulated from real historical prices and don’t include fees, taxes or trading costs. How we calculate performance. Nothing here is investment advice.

A research tool, not investment advice. Past performance doesn't guarantee future results. Learn more