Sector
Energy
GICS classification
Coverage
Top 10
by market cap
Updated
2026-05-08
refresh quarterly
Top 10 by Market Capitalization
Ranked by market cap as of 2026-05-08. Signal briefs link to the latest AlertEdge deep dive when available.
| # | Ticker | Company | Market Cap | Sub-Industry | Signal Brief | Chart |
|---|---|---|---|---|---|---|
| 1 |
 XOM
|
ExxonMobil | $607.6B | Integrated Oil & Gas | View Brief | Chart |
| 2 |
 CVX
|
Chevron Corporation | $360.8B | Integrated Oil & Gas | View Brief | Chart |
| 3 |
 COP
|
ConocoPhillips | $140.0B | Oil & Gas Exploration & Production | View Brief | Chart |
| 4 | WMB | Williams Companies | $89.2B | Oil & Gas Storage & Transportation | — | Chart |
| 5 |
 SLB
|
Schlumberger | $79.2B | Oil & Gas Equipment & Services | — | Chart |
| 6 |
 MPC
|
Marathon Petroleum | $70.7B | Oil & Gas Refining & Marketing | View Brief | Chart |
| 7 |
 VLO
|
Valero Energy | $70.2B | Oil & Gas Refining & Marketing | View Brief | Chart |
| 8 |
 KMI
|
Kinder Morgan | $70.1B | Oil & Gas Storage & Transportation | — | Chart |
| 9 |
 EOG
|
EOG Resources | $69.7B | Oil & Gas Exploration & Production | View Brief | Chart |
| 10 |
 PSX
|
Phillips 66 | $67.5B | Oil & Gas Refining & Marketing | View Brief | Chart |
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