Saudi Aramco's IPO: How the World's Largest Listing Was Built

In December 2019, Saudi Aramco, the state-owned oil company of Saudi Arabia, listed on the Saudi Exchange. Including the over-allotment option, it raised about $29.4 billion, surpassing Alibaba's 2014 listing to become the world's largest IPO at the time. At its IPO price, Aramco was valued at about $1.7 trillion.

Yet the offering looked very different from the one first envisaged. Plans for an international listing were dropped, the float was tiny and the valuation fell short of the $2 trillion target that had been discussed for years. This case study explains how the IPO was built and what it teaches about large, state-driven listings.

1. Background

• Vision 2030. The IPO was part of Saudi Arabia's plan to diversify its economy and raise capital for the Public Investment Fund.
• Initial ambitions included an international listing in markets such as New York or London and a valuation of around $2 trillion.
• Repeated delays pushed the IPO back from its original timeline.
• An attack on major Aramco oil facilities in September 2019 highlighted geopolitical risks shortly before the listing.

2. How the IPO Was Structured

• Domestic listing only. Aramco listed on the Saudi Exchange (Tadawul) rather than an international exchange.
• A small float. Only about 1.5% of the company was sold.
• Domestic and regional demand. Saudi institutions, Saudi retail investors and investors from neighbouring Gulf states made up a large share of demand, while many international institutions participated less than originally hoped.
• Retail incentives, such as bonus shares for Saudi individual investors who held for a period.
• Pricing at 32 riyals per share, at the top of the range.

3. Why the Plans Changed

• Valuation gap. Many international investors valued Aramco below the government's target, citing oil price risk, energy transition concerns and governance considerations.
• Legal and disclosure considerations associated with some international listings.
• Control of the process. A domestic listing allowed greater influence over demand and timing.

4. After the IPO

• Shares rose in the first days of trading, briefly pushing Aramco's value to about $2 trillion.
• Aramco remained among the most valuable companies in the world, paying large dividends.
• In 2024, the government sold additional shares in a follow-on offering, raising more than $11 billion.

5. Lessons for Founders and Investors

• Valuation targets must meet investor demand. A seller can set expectations, but investors decide price. See Uber's 2019 IPO.
• Venue choice shapes the investor base, disclosure obligations and liquidity. See Arm's 2023 relisting.
• Small floats can support pricing but limit liquidity and index weight.
• Anchor demand from domestic and friendly investors can secure a deal but may not reflect global appetite.
• Sovereign sellers have policy goals as well as financial ones. See Saudi Arabia's venture push.

Frequently Asked Questions

How much did the Aramco IPO raise?

About $25.6 billion initially, rising to about $29.4 billion after the over-allotment option was exercised.

Why did Aramco list only in Saudi Arabia?

International demand at the desired valuation was limited, and a domestic listing gave greater control over the process.

How much of Aramco was sold?

About 1.5% in the IPO, with further shares sold in a 2024 follow-on offering.

Is Aramco still the world's largest IPO?

It set the record in 2019 and remains among the largest IPOs ever; readers should check current rankings for any later listings.

The Bottom Line

Aramco's IPO shows how a determined seller can build a record-breaking listing through domestic anchoring, a small float and careful structuring, while also showing the limits of setting valuation targets that global investors do not share. For founders and investors, it is a vivid example of how venue, float and demand shape any IPO.

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This article is general information, not investment advice. Figures are approximate.