The Largest Energy Companies by Market Cap in May 2026

Saudi Aramco, ExxonMobil, and Chevron command the energy sector.

By Lyle Daly – Updated May 8, 2026 at 2:53 PM EST | Fact-checked by Frank Bass

Key Points

Saudi Aramco leads as the world's largest energy company, valued at more than $1 trillion.
ExxonMobil and Chevron follow, both major U.S. oil producers with strong market caps.
The energy sector is dominated by oil and gas despite shifts towards renewable energy.

Saudi Aramco, also known as Saudi Arabian Oil, tops the list of the world's largest energy companies, followed by ExxonMobil (XOM +3.95%) and Chevron (CVX +2.29%). There's a substantial gap between Saudi Aramco, which is the only energy company worth more than $1 trillion, and the rest of the field.

(Editor's note: Rankings are as of May 1, 2026.)

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Two engineers work in an oilfield. — Image source: Getty Images.

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Largest companies by market cap in the energy sector

(Some companies that are not listed on major exchanges will not be displayed in the following table.)

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Ticker Information Table
Name and ticker	Market cap	Current price	Industry
Saudi Arabian Oil (SASE:2222)	$0.0 thousand	SAR 27.70	Oil, Gas and Consumable Fuels
ExxonMobil (NYSE:XOM)	$633.3 billion	$157.92	Oil, Gas and Consumable Fuels
Chevron (NYSE:CVX)	$371.7 billion	$190.91	Oil, Gas and Consumable Fuels
Shell Plc (NYSE:SHEL)	$235.9 billion	$85.35	Oil, Gas and Consumable Fuels
PetroChina (OTC:PCCYF)	$259.0 billion	$1.39	Oil, Gas and Consumable Fuels
TotalEnergies (NYSE:TTE)	N/A	N/A	Oil, Gas and Consumable Fuels
ConocoPhillips (NYSE:COP)	$144.9 billion	$122.41	Oil, Gas and Consumable Fuels
BP (NYSE:BP)	$113.6 billion	$44.35	Oil, Gas and Consumable Fuels
Enbridge (NYSE:ENB)	$122.8 billion	$55.31	Oil, Gas and Consumable Fuels

Data as of May 16, 2026. Showing 9 of 9 tickers.

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1. Saudi Aramco

SASE: 2222

Saudi Arabian Oil

Today's Change

(-0.79%) $-0.22

Current Price

$27.70

Key Data Points

Day's Range

$27.70 - $27.92

52wk Range

$23.04 - $27.96

Volume

16M

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Market cap: $1.79 trillion* (as of May 1)
Revenue (TTM): $445.7 billion*
Gross profit (TTM): $223.6 billion*
Five-year annualized return: -1.18%
Year founded: 1933

*Converted from Saudi riyals.

Saudi Arabian Oil, also known as Saudi Aramco (SASE:2222), is a state-owned oil company. It's the world's top oil producer, with production totals of 12.9 million barrels of oil equivalent per day in 2025. It also has the second-largest proven crude oil reserves, second only to Venezuela.

2. ExxonMobil

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NYSE: XOM

ExxonMobil

Today's Change

(4.07%) $6.17

Current Price

$157.92

Key Data Points

Market Cap

$633B

Day's Range

$153.00 - $158.00

52wk Range

$101.19 - $176.41

Volume

28M

Avg Vol

21M

Gross Margin

20.92%

Dividend Yield

2.64%

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Market cap: $634.91 billion (as of May 1)
Revenue (TTM): $323.9 billion
Gross profit (TTM): $71.2 billion
Five-year annualized return: 21.69%
Year founded: 1882 (Standard Oil of New Jersey), 1999 (merger of Exxon and Mobil)

ExxonMobil is the largest U.S. oil company. In 2013, it was the world's largest company. It's involved in crude oil and natural gas production, the sale of petroleum products and petrochemicals, lower-emission energy development, and the production of specialty chemical products.

This oil company has a tarnished reputation with the general public. It has used its influence to fight climate change regulations and was responsible for the second-worst oil spill in U.S. history, the 1989 Exxon Valdez disaster off the coast of southern Alaska.

3. Chevron

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NYSE: CVX

Chevron

Today's Change

(2.29%) $4.27

Current Price

$190.91

Key Data Points

Market Cap

$372B

Day's Range

$187.88 - $191.34

52wk Range

$133.77 - $214.71

Volume

356K

Avg Vol

12M

Gross Margin

15.15%

Dividend Yield

3.70%

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Market cap: $379.72 billion (as of May 1)
Revenue (TTM): $184.4 billion
Gross profit (TTM): $56.1 billion
Five-year annualized return: 13.09%
Year founded: 1882

Chevron is another leading U.S. oil company with both upstream and downstream operations. Upstream operations refer to exploration and production, while downstream operations refer to refining and marketing. Chevron is notable for leveraging technology to improve its operations, including the use of artificial intelligence (AI) tools for fault detection.

Like ExxonMobil, Chevron has received plenty of criticism for climate change denial and oil spills. The U.S. Environmental Protection Agency (EPA) has also fined Chevron on multiple occasions for violating federal laws, including the Clean Air Act.

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4. PetroChina

OTC: PCCYF

PetroChina

Today's Change

(-1.88%) $-0.03

Current Price

$1.39

Key Data Points

Market Cap

$259B

Day's Range

$1.39 - $1.55

52wk Range

$0.72 - $1.59

Volume

13K

Avg Vol

86K

Dividend Yield

4.64%

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Market cap: $262.09 billion (as of May 1)
Revenue (TTM): $417.1 billion*
Gross profit (TTM): $91.9 billion*
Five-year annualized return: 32.10%
Year founded: 1999

*Converted from Chinese yuan.

Based in Beijing, the China National Petroleum Corp., known as PetroChina (PCCYF -1.88%), is China's largest oil company. It's also the top oil producer in Asia. In 2025, it produced 948 million barrels of crude oil.

PetroChina has focused on its renewable energy business so far this decade. It has also committed to having renewables account for one-third of its energy portfolio by 2035 and 50% by 2050.

5. Shell

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NYSE: SHEL

Shell Plc

Today's Change

(0.99%) $0.84

Current Price

$85.35

Key Data Points

Market Cap

$236B

Day's Range

$84.33 - $85.47

52wk Range

$65.38 - $94.90

Volume

205K

Avg Vol

7.9M

Gross Margin

16.95%

Dividend Yield

3.42%

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Market cap: $248.11 billion (as of May 1)
Revenue (TTM): $266.9 billion
Gross profit (TTM): $42.5 billion
Five-year annualized return: 19.00%
Year founded: 1907

Shell (SHEL +0.99%) is a British energy company involved in the exploration and production of oil, natural gas, and renewable energy. It operates in more than 70 countries and produced 2.8 million barrels of oil and gas per day in 2025.

6. TotalEnergies

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NYSE: TTE

TotalEnergies

Today's Change

(0.00%) $0.00

Current Price

$0.00

Key Data Points

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Market cap: $206.57 billion (as of May 1)
Revenue (TTM): $184.0 billion
Gross profit (TTM): $56.8 billion
Five-year annualized return: 15.94%
Year founded: 1924

TotalEnergies (TTE +0.94%) is a French oil and chemicals company involved in liquefied natural gas (LNG) production and trading, electricity production from renewable sources, and the refining and marketing of petroleum products.

Formerly known as Total, the company rebranded to TotalEnergies in 2021 as part of its shift toward renewable energy production.

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7. China National Offshore Oil Corporation

Market cap: $178.17 billion* (as of May 1)
Revenue (TTM): $58.3 billion*
Gross profit (TTM): $39.4 billion*
Five-year annualized return: 28.95%
Year founded: 1982

*Converted from Chinese yuan.

China National Offshore Oil Corporation, or CNOOC, is a state-owned oil company that operates in more than 20 countries, including Indonesia, Iraq, and the United Arab Emirates. It was delisted from the New York Stock Exchange in 2021 due to U.S. sanctions against China.

CNOOC receives a significant share of its business from the China International Import Expo (CIIE). In 2025, it sealed a record $13 billion worth of deals at the CIIE.

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8. ConocoPhillips

NYSE: COP

ConocoPhillips

Today's Change

(2.89%) $3.44

Current Price

$122.41

Key Data Points

Market Cap

$145B

Day's Range

$120.49 - $122.48

52wk Range

$84.28 - $135.87

Volume

7.1M

Avg Vol

9.7M

Gross Margin

23.54%

Dividend Yield

3.43%

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Market cap: $150.08 billion (as of May 1)
Revenue (TTM): $58.2 billion
Gross profit (TTM): $14.0 billion
Five-year annualized return: 19.22%
Year founded: 1875

ConocoPhillips (COP +2.89%) is a Houston, Texas–based company involved in the exploration and production of oil and natural gas. It operates in 15 countries, with about half of its production occurring in the U.S.

9. Enbridge

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NYSE: ENB

Enbridge

Today's Change

(-0.37%) $-0.20

Current Price

$55.31

Key Data Points

Market Cap

$123B

Day's Range

$54.58 - $55.74

52wk Range

$43.59 - $56.22

Volume

3.9M

Avg Vol

4.7M

Gross Margin

30.95%

Dividend Yield

4.87%

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Market cap: $119.66 billion (as of May 1)
Revenue (TTM): $47.9 billion*
Gross profit (TTM): $15.8 billion*
Five-year annualized return: 7.29%
Year founded: 1949

*Converted from Canadian dollars.

Enbridge (ENB -0.35%) is a Canadian energy delivery company. It operates the longest, most complex oil and liquids transportation system in North America, with approximately 18,085 miles of active pipelines. It delivers about 5.8 million barrels of oil and liquids every day in its network.

Enbridge has been responsible for several oil spills and leaks. Some of its projects have also led to protests, with the Dakota Access Pipeline one of the more prominent examples.

10. BP

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NYSE: BP

Today's Change

(1.67%) $0.73

Current Price

$44.35

Key Data Points

Market Cap

$114B

Day's Range

$43.73 - $44.38

52wk Range

$28.41 - $48.27

Volume

5.4M

Avg Vol

14M

Gross Margin

19.11%

Dividend Yield

4.48%

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Market cap: $119.51 billion (as of May 1)
Revenue (TTM): $194.7 billion
Gross profit (TTM): $37.7d billion
Five-year annualized return: 13.03%
Year founded: 1909

BP is a British oil company. It produces oil and natural gas and has operations in 70 countries.

This company has also been involved in some major controversies. In one of the most notable examples, BP was responsible for the Deepwater Horizon oil spill, the worst oil spill in U.S. history.

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Oil still leads energy by market cap, but the mix is changing

The largest energy companies are in the oil and gas industry. Since the Iran war has affected oil prices, many of these companies have been particularly volatile this year.

Although most oil companies are now investing in renewable energy, almost all have had high-profile issues, such as oil spills or climate change denial. If that's not a dealbreaker, these companies tend to be stable businesses, and many oil dividend stocks offer high dividend payouts.

If you want to avoid big oil, the energy sector also offers renewable energy stocks. You won't find them among the top 10 (at least not yet), but they provide a more sustainable way to invest in energy companies.

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The Largest Energy Companies by Market Cap in May 2026

Saudi Aramco, ExxonMobil, and Chevron command the energy sector.

Key Points

Largest companies by market cap in the energy sector

1. Saudi Aramco

Key Data Points

2. ExxonMobil

Key Data Points

3. Chevron

Key Data Points

4. PetroChina

Key Data Points

5. Shell

Key Data Points

6. TotalEnergies

Key Data Points

7. China National Offshore Oil Corporation

8. ConocoPhillips

Key Data Points

9. Enbridge

Key Data Points

10. BP

Key Data Points

Oil still leads energy by market cap, but the mix is changing

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Largest companies by market cap in the energy sector

Key Data Points

2. ExxonMobil

Key Data Points

3. Chevron

Key Data Points

Key Data Points

Key Data Points

6. TotalEnergies

Key Data Points

7. China National Offshore Oil Corporation

Key Data Points

9. Enbridge

Key Data Points

10. BP

Key Data Points

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5. Shell