|Company||Market Cap (USD)|
|Marathon Petroleum Corporation||$51.62 B|
|Phillips 66||$43.77 B|
|Valero Energy Corporation||$40.87 B|
|Neste Oyj||$30.57 B|
|Formosa Petrochemical Corp||$24.49 B|
The market capitalization of a company, more simply referred to as "market cap", is the total market value of a publicly traded company's outstanding shares. It is often considered as a key indicator of what a company is worth.