Founded in 1933, Saudi Aramco is the owner of one of the world’s largest oil reservoirs, containing 260 billion barrels — that’s more than ten times the entire United States’ crude oil stockpile. In addition, Aramco has a natural gas reservoir of 186 trillion cubic feet, making it the largest integrated oil and gas company in the world, ahead of other international oil companies. The Saudi Aramco IPO While reports of the company going public on the financial market have been present for quite some time, in early November, Saudi Arabia’s market regulator officially announced that Aramco will hold a domestic listing on the Riyadh Stock Exchange.