Low Tuck Kwong Net Worth: Why Two Credible Trackers Named a Different Richest Indonesian Ten Days Apart
5 min readUpdated 22 August 2026
Loading...
5 min readUpdated 22 August 2026
Low Tuck Kwong's net worth was reported at about $15.9 billion by Kompas on 10 July 2026, which placed him as Indonesia's richest person. On 29 July 2026, the tracker WealthRank put him at $16.8 billion, ranking him 166th in the world and first in Indonesia. Forbes places him at #131 on its 2026 Billionaires list.
Now the part worth your attention. Ten days before that Kompas figure, on 30 June 2026, the Bloomberg Billionaires Index had a different Indonesian on top entirely: Sukanto Tanoto, at $24.3 billion.
Two credible outlets. Ten days apart. Different number one, and a gap of roughly eight billion dollars in what "richest Indonesian" means.
Almost all of it is coal.
Low Tuck Kwong was born in Singapore and worked in his father's construction business as a teenager before moving to Indonesia in 1972. He founded Bayan Resources, the Indonesian coal mining company where he serves as president director, and that single company is the overwhelming majority of the fortune tracked above.
He also controls Metis Energy, the Singapore-listed renewable energy company formerly known as Manhattan Resources, and holds interests in The Farrer Park Company and Samindo Resources.
That concentration is the single most important fact about this fortune, and it explains most of what follows.
When one person's wealth is mostly one listed company, the estimate becomes a live calculation rather than a considered judgement. It is essentially a share price multiplied by a stake, and both inputs are contested.
Four things drive the spread:
Valuation date. A figure from 30 June and a figure from 29 July are not the same measurement. Coal prices and share prices move in between. Comparing them and calling the difference a change in someone's wealth is a mistake we take care to avoid.
Methodology. Forbes, Bloomberg and Indonesian outlets each treat private holdings, debt, and stakes held through family entities differently. Those choices are not minor when a fortune is concentrated.
What counts as a stake. Shares held directly, through holding companies, or through family members are counted differently by different trackers.
Snapshot versus real time. Forbes's annual Billionaires list and its real-time tracker are two different products with two different dates. Low Tuck Kwong sits at #131 on the 2026 annual list while a real-time tracker placed him at #166 in late July. Neither is wrong. They are measuring on different days.
This is the part that generalises beyond one person.
A fortune built on one commodity producer inherits that commodity's cycle in full. Coal prices are among the more volatile inputs in global markets, and a coal miner's share price amplifies them further, because a producer's profit is the gap between a moving price and a relatively fixed cost base. A modest move in the commodity can produce a large move in the equity.
That works in both directions. Concentration is why fortunes like this appear at the top of a national list quickly, and it is also why their reported position moves around between publications more than a diversified fortune's does.
You can see a similar mechanism, single-company concentration rather than single-commodity, in Alice Walton's fortune, where the position is inherited Walmart stock rather than a founded coal miner. The names and the industries differ. The volatility mechanism does not.
The contest for "richest Indonesian" reflects this directly. Low Tuck Kwong's coal fortune and Prajogo Pangestu's petrochemical fortune have traded the top spot on various trackers, because both are concentrated in listed companies whose prices move independently of each other.
Less than the precision suggests.
None of these figures are audited accounts. They are third-party estimates built from public shareholdings, share prices on a chosen date, and assumptions about everything not publicly disclosed. A figure quoted to one decimal place implies a precision that the underlying method does not support.
The honest summary: credible published estimates of Low Tuck Kwong's net worth in July 2026 clustered in the $15.9 billion to $16.8 billion range, and reasonable people using public data disagreed within that band. The competing claim about who is Indonesia's richest is unresolved rather than settled, and it depends on which tracker and which date you choose.
Three things, and none require any view on coal.
Concentration cuts both ways, and the upside is more visible than the downside. Fortunes at the top of national lists are usually concentrated, because concentration is how you get there fast. The same property is what makes the position unstable. Most people see the first half of that trade and not the second.
Your own portfolio has a concentration number, and you probably have not checked it. If one holding is a large share of your total, your results are that holding's results regardless of how many other positions you own. NetWort shows risk contribution per holding, which answers this directly.
A single source is a single opinion. If two credible outlets can disagree by eight billion dollars on a public person's wealth using public data, treat any single number about anything with the same caution.