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Mukesh Ambani's net worth was $99.7 billion, per Forbes' World's Billionaires List, published 10 March 2026, ranking the Reliance Industries chairman 21st globally and first in India. Five months earlier, Forbes India's Rich List, published 9 October 2025, had put him at $105 billion, a decline of about $5.3 billion inside the same publisher's own tracking. Separately, the Bloomberg Billionaires Index priced him at $84.2 billion as of 23 July 2026, per Nairametrics, a roughly $15 billion gap from Forbes' own figure four months earlier on a fortune that sits almost entirely in one exchange-listed stock. Mukesh Ambani chairs Reliance Industries. He is not to be confused with his estranged brother, Anil Ambani, who chairs the separate Reliance Communications and faces unrelated 2026 fraud proceedings described below.
Forbes India's Rich List, published 9 October 2025, ranked Mukesh Ambani India's richest person with $105 billion, a 12% decline from the prior year that Forbes attributed to a weaker rupee and a roughly 3% drop in India's benchmark Sensex index since the fortunes were last measured. Forbes' own World's Billionaires List, published 10 March 2026 (Naazneen Karmali), placed him 21st globally and first in India at $99.7 billion, a further decline of about $5.3 billion inside the same publisher's tracking. The Bloomberg Billionaires Index, as reported by Nairametrics on 23 July 2026, priced him at $84.2 billion, down $23.6 billion, or about 22%, since the start of 2026 by Bloomberg's own count. Forbes and Bloomberg disagree by roughly $15 billion even allowing for the months between the two snapshots, and this article keeps each tracker's own figures inside its own timeline rather than blending them into one before-and-after.
| Date | Publisher | Figure | Context |
|---|---|---|---|
| 9 October 2025 | Forbes India Rich List | $105 billion | 1st in India |
| 10 March 2026 | Forbes World's Billionaires List | $99.7 billion | 21st globally, 1st in India |
| 23 July 2026 | Bloomberg Billionaires Index (via Nairametrics) | $84.2 billion | Down 22% YTD per Bloomberg |
Nearly all of Ambani's tracked fortune is one stake in one company: Reliance Industries Limited, India's largest private-sector company, which spans oil-to-chemicals refining, Jio Platforms (telecom and digital services), and Reliance Retail. Bloomberg's index, per Nairametrics, credits him with roughly a 42% personal stake; separately, Business Standard reported that the Ambani family's promoter group had raised its combined holding to 50.48% by the end of the June 2026 quarter through open-market purchases, an increase rather than a sale. Succession is already underway at the operating level: Ambani's three children, Akash (telecom and digital services), Isha (retail and consumer), and Anant (energy and new materials), have sat on Reliance's board since August 2023, each running a distinct vertical rather than sharing one role.
Reliance trades on India's exchanges as RELIANCE, not present in NetWort's curated ticker universe, checked against frontend/scripts/curated-tickers.mjs and backend/app/services/asset_symbol_service.py, so it is named here by ticker only, with no internal asset link.
Reliance's first-quarter results for its 2027 fiscal year, reported 17 July 2026 by Business Standard, showed consolidated revenue up 24.5% year on year to ₹3.4 lakh crore even as net profit attributable to the company fell about 22% to ₹20,946 crore, a divergence Business Standard tied to sharply higher crude oil costs during the quarter. Reliance's own shares closed at ₹1,240.6 on 17 September 2026, per INDmoney, near the bottom of a 52-week range that topped out at ₹1,611.8, a decline of roughly 23% from that high. Two other 2026 developments sit alongside the earnings: Jio Platforms filed its draft public-offering prospectus with India's markets regulator on 19 June 2026, the same day Ambani announced it at Reliance's annual general meeting, targeting a fresh-issue raise of about $4 billion, per Business Standard's reporting at the time. Separately, Meta agreed on 10 June 2026 to lease a 168-megawatt AI data centre from Reliance at Jamnagar, Gujarat, backed by roughly 1 gigawatt of new renewable capacity, confirmed by Meta's own newsroom the same day.
Less knowable than a single-stock fortune should be. Nearly the entire tracked figure comes from one exchange-listed company with a public share price, yet Forbes and Bloomberg disagreed by roughly $15 billion even after allowing for the months between their two most recent snapshots, the same shape this series found for Michael Dell's Forbes-versus-Bloomberg gap on a similarly transparent, fully listed fortune. Reliance itself does not publish Ambani's personal net worth; both trackers build their own figures from disclosed shareholdings, share price, and their own assumptions about debt and family entities.
A fortune built on one listed, liquid stock ought to be the easiest kind to price, and Ambani's case shows that even then, two major trackers can land billions apart depending on how each treats family holding structures and timing. It is also a reminder that a shared surname is not shared ownership: Mukesh Ambani's Reliance Industries and Anil Ambani's Reliance Communications have been separate companies with separate finances for two decades. For other fortunes shaped by tracker disagreement or multi-child succession, see:
NetWort's macro page tracks the USD/IDR rate daily, useful context if you are converting any of the Rupiah figures elsewhere in this series yourself.