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BillionaireList

Comparison

Bill Gates vs Thomas Peterffy net worth

Bill Gates has the higher latest estimate, $117 billion (October 2026) against $97.9 billion for Thomas Peterffy (October 2026), a gap of $19 billion.
Industry setting behind the larger fortune
Latest estimate
$117B$97.9B
As of
Oct 2026Oct 2026
Source
Forbes Real-Time BillionairesForbes Real-Time Billionaires
Rank
1619
Change vs previous estimate
-$11.2B+$80.8B
Age
7082
Country
United StatesUnited States
Industry
TechnologyFinance and investments
Source of wealth
Microsoft, Cascade InvestmentInteractive Brokers
Self-made
YesYes
Dated estimates on record
322
Dated estimates on one chart Bill Gates Thomas Peterffy
$0 $35B $70B $104B $139B 2019 2021 2023 2025 Bill Gates, $129B, March 2022, Forbes Bill Gates, $104B, March 2023, Forbes Bill Gates, $128B, March 2024, Forbes Bill Gates, $117B, 15 Oct 2026, Forbes Real-Time Billionaires Thomas Peterffy, $17.1B, 2019, Forbes Thomas Peterffy, $97.9B, 15 Oct 2026, Forbes Real-Time Billionaires

Shared time and value axes. Each point is one dated public estimate; hover a point for its date and publisher.

Questions people ask

Who is richer, Bill Gates or Thomas Peterffy?
Bill Gates has the higher latest estimate, $117 billion (October 2026) against $97.9 billion for Thomas Peterffy (October 2026), a gap of $19 billion.

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