Saudi Aramco is the world's richest-company-by-market-cap example that serves as Saudi Arabia's national oil producer.
Saudi Aramco is the commonly used name for Saudi Arabian Oil Company, the state-controlled petroleum and natural-gas company. Its history traces back to the 1933 concession that led to the discovery of commercial oil in Saudi Arabia.
The company is involved in exploration, production, refining, chemicals, and energy distribution. Saudi Aramco's enormous hydrocarbon reserves and production capacity have made it one of the most financially significant energy companies in the world.
Saudi Aramco shares began trading publicly on the Saudi Exchange in 2019. It is distinct from Saudi Arabia's Ministry of Energy: the ministry sets national energy policy, while Aramco operates as the country’s major energy company.