Koon Poh Keong Net Worth: $9.7B With Siblings in April, $6.1B Alone Now, All Forbes
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Koon Poh Keong's net worth was $6.1 billion per Forbes' real-time tracker on 1 November 2026, which put him 670th in the world. Forbes' Malaysia's 50 Richest list (16 April 2026) gave $9.7 billion for "Koon Poh Keong and siblings", second in Malaysia. Both numbers come from Forbes, and they measure different things.
Forbes lists his source of wealth as aluminium. He is group chief executive of Press Metal Aluminium Holdings, which Forbes describes as Southeast Asia's largest integrated aluminium producer. According to Forbes' profile, he started the business with four brothers, who pooled $50,000 and rented a factory in Puchong, Selangor.
| Publisher | Date | Figure | Note |
|---|---|---|---|
| Forbes, Malaysia's 50 Richest | 17 April 2025 (report date) | $5.4 billion | "Koon Poh Keong and siblings", 4th in Malaysia |
| Forbes, World's Billionaires 2025 | 2025 list | $4.2 billion | Ranked 868th in the world, listed under his name |
| Forbes, World's Billionaires 2026 | March 2026 list | $6.5 billion | Ranked 645th in the world |
| Forbes, Malaysia's 50 Richest | 16 April 2026 (Free Malaysia Today) | $9.7 billion | "Koon Poh Keong and siblings", 2nd in Malaysia, up 80% |
| Forbes, Real-Time Net Worth | 1 November 2026 | $6.1 billion | Ranked 670th in the world |
Every row is Forbes, but the table contains two series. The Malaysia lists price him and his siblings together: $5.4 billion in 2025 and $9.7 billion in 2026, which is the 80% rise Forbes reported, its biggest gain in US dollar terms on that list. The world list and the real-time tracker price him under his own name: $4.2 billion, then $6.5 billion, then $6.1 billion.
So $9.7 billion and $6.1 billion are not a fall of 37%. They are different groupings. The Forbes pages we read do not spell out how the sibling share is split, so we do not offer one. We also did not find a Bloomberg Billionaires Index figure for him that we could read and date, so none appears here.
In the April list, as reported by Free Malaysia Today, the Koon siblings reached second place for the first time, passing Quek Leng Chan, who fell to fifth. Quek is priced on his own in that list at $7.5 billion (see Quek Leng Chan's profile), while the Koon entry is a group. A group entry can outrank an individual without any one person being richer than the other.
Compare Forbes with Forbes inside one series. On the world list under his own name, he moved from $3.7 billion (2024) to $4.2 billion (2025) to $6.5 billion (2026). On the Malaysia list, the sibling entry moved from $5.4 billion to $9.7 billion.
Press Metal Aluminium Holdings is listed on Bursa Malaysia. Free Malaysia Today, citing the company's latest annual report, says he holds the largest stake, at 34.1%. Press Metal began in 1986 as an aluminium extrusion factory started with several siblings.
That makes this a listed-stock fortune, which is why the tracker figure can be checked against a public price, unlike a privately held group such as the one in Robert Kuok's profile. Forbes does not publish its full working, so a reader cannot rebuild the number exactly.
Two dated facts sit next to the rise, and no publisher we read ties either to Forbes' exact figure.
We did not find a sourced explanation for why the real-time figure ($6.1 billion) sits below the March world list ($6.5 billion), so we do not offer one. Share prices move daily and Forbes updates its tracker after each trading day.
Mostly. The main asset is a listed company with a disclosed 34.1% stake, so the direction of the figure follows a price anyone can look up. What a reader cannot see is Forbes' treatment of other holdings or of his siblings' share. Press Metal is not in NetWort's curated asset list, so we do not link a price page, but the market overview shows how listed stocks have moved.
For other Asian fortunes tied to a single commodity business, see Sukanto Tanoto and Quek Leng Chan. For a Malaysian fortune built on a listed retail chain instead, see Lee Thiam Wah.
Check who the number counts. "Koon Poh Keong and siblings" at $9.7 billion and "Koon Poh Keong" at $6.1 billion are both Forbes, and they are not the same quantity.
Compare like with like. The Malaysia list year over year ($5.4 billion to $9.7 billion) and the world list year over year ($4.2 billion to $6.5 billion) are valid comparisons. Mixing the two series is not.
Nothing in the public record we reviewed for this article suggests anything other than a business reported openly by Forbes.