Estimated net worth$241.6B241.6 billion US dollars↓ -$2.8B(1.14%)estimated decrease of 2.8 billion US dollars over one day
Valued as of
Sources checked
Why two dates?
"Valued as of" is the effective date of the market closes, exchange rates, and filings inside the estimate. "Sources checked" is when the pipeline last verified those sources successfully. A weekend check can confirm a Friday valuation without inventing weekend movement.
As of September 4, 2026, Sergey Brin's estimated net worth is about $241.6B(241.6 billion US dollars). That places Sergey Brin at #3 among the people Net Worth Leader currently tracks.
This is an estimate of assets minus documented liabilities. It is not a cash balance, and many holdings may be restricted, pledged, illiquid, or difficult to value.
Summary
Sergey Brin co-founded Google with Larry Page and remains an Alphabet director and controlling shareholder. Unlike his co-founder, Brin files Forms 4 frequently because he makes regular gifts of stock, so his Class B and Class C counts are current to within days.
How the fortune was built
Brin co-developed Google's search technology at Stanford, led its technical and moonshot efforts, and stepped back from executive roles in 2019. He has given away large blocks of Alphabet stock in recent years while keeping the majority of his founder stake, and has returned informally to work on Alphabet's artificial intelligence models.
What drives the estimate
The estimate moves with Alphabet's Class A and Class C share prices. Periodic gifts lower the count in steps visible in his filings.
Why the estimate changed
Sergey Brin's estimate declined mainly because Alphabet Inc. shares decreased from the prior comparable close.
Alphabet Class B common stock held directly (converts one-for-one into Class A): -$1.4Bestimated decrease of 1.4 billion US dollars (market price)
Alphabet Class A common stock held directly: -$150,625estimated decrease of 150,625 US dollars (market price)
Alphabet Class C capital stock held directly: -$1.4Bestimated decrease of 1.4 billion US dollars (market price)
A one-day estimate change is not the same as income, profit, or a realized gain or loss.
Asset and documented-liability breakdown
Material components of Sergey Brin's estimate with values, dates, and evidence
Component
Class
Ownership
Valuation basis
Central value
Supported range
Evidence date
Price date
Sources
Freshness
Alphabet Class B common stock held directly (converts one-for-one into Class A)Alphabet Inc. (GOOGL, Class A common stock)
Liabilities without a documented value are never shown as zero; they are simply not included, and that limitation is part of source coverage below.
Source coverage and uncertainty
100.0% of this profile's modeled gross value is supported by Tier 1 or Tier 2 evidence (primary filings, official documents, licensed market data, or audited accounts). The profile carries a strong coverage label.
No meaningful range beyond the central estimate is supported for this profile, so only the central value is published. Unknown liabilities are not evidence that no liabilities exist. No personal liability is documented for this profile, so none is deducted.
Estimate history
Sergey Brin: published estimate history
The timeline runs from June 12, 2026 to September 4, 2026; the latest estimate is lower than the first point. Points before August 20, 2026 are labeled modeled reconstructions: today's reviewed ownership records applied to the closing prices of each earlier market date. Published history begins August 20, 2026 and grows one point per completed market date.
The same history as an accessible table (50 points)
Uses the BLS median usual weekly earnings of full-time wage and salary workers for the second quarter of 2026 ($1,258, seasonally adjusted) multiplied by 52 weeks, before taxes.
Split across New York City
Split evenly across every New York City resident, the estimate works out to about $28,142 per person.
Share counts come from his August 11, 2026 Form 4. Shares held in two charitable remainder unitrusts are excluded. Private investments and personal assets are not modeled.
Identity facts stored separately for this profile: citizenship United States; residence United States; ranking attribution United States. Attribution reason: Citizenship, residence, and the headquarters of the companies that drive the estimate are all in the United States.
Reviewed by Net Worth Leader editorial desk on August 20, 2026. General rules live in the methodology.