Saudi Aramco is gearing up for what could be the largest IPO ever. Here are 10 public offerings its massive listing would dwarf.

REUTERS/Ahmed Jadallah

• Saudi Aramco is preparing for what could turn out to be the world's largest initial public offering.
• The state-run oil company is currently aiming to list as much as 5% of its shares sometime between 2020 and 2021.
• Saudi officials have suggested Aramco may be worth as much as $2 trillion in the past, which means the company could raise close to $100 billion through an IPO.
• Here are 10 IPOs that Aramco could dwarf with its proposed multi-billion-dollar public offering.
• Visit the Markets Insider homepage for more stories.

Saudi Aramco is preparing for what could shape up to be the world's largest initial public offering.

The massive state-run oil company is looking to list as much as 5% of its shares sometime in 2020 or 2021. Aramco officials have suggested the company could be worth as much as $2 trillion in the past.

If Aramco were to list 5% of its shares at a $2 trillion valuation, it could raise as much $100 billion through the offering. That's four times the largest IPO in history.

Aramco has reportedly hired JPMorgan, Morgan Stanley, and Saudi Arabia's National Commercial Bank for top underwriting spots on the offering, according to Reuters.

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The company is also considering a multi-stage IPO, listing about 1% on Saudi Arabia's stock exchange and another 1% on an international venue prior to its 5% offering. The proceeds from the IPO are expected to help Saudi Arabia diversify its economy away from oil.

The public markets have seen some sizeable IPOs this year, from Uber raising $8.1 billion to Pinterest raking in $1.4 billion. But not a single public offering from this year cracks the top ten largest listings of all time.

Here are the 10 largest IPOs that Saudi Aramco's potential listing could blow out of the water, ranked in increasing order of proceeds: