Thomas Peterffy Timeline
Thomas Peterffy emigrated in 1965 and stepped down as CEO of Interactive Brokers in 2019 23.
Full nameThomas Peterffy (born Tamás Péterffy)
NationalityUnited States
Known forFounder and chairman of Interactive Brokers
1944: born in Budapest
Tamás Péterffy is born during a Soviet air raid 3.
- 1944 · BORNBorn in Budapest during a Soviet air raid
- 1965 · MILESTONEEmigrates from Hungary to the United States
- 1992 · MILESTONEDivorces Dale McDonald
- 2019 · ROLESteps down as CEO of Interactive Brokers; stays chairman
- 2026 · MILESTONERanked 20th with $95.6 billion
1965: emigrates to the US
He moves to the United States and works as a draftsman before becoming a programmer 27.
1992: divorce
His marriage to Dale McDonald ends 8.
2019: steps down as CEO
He remains chairman of Interactive Brokers 3.
2026: 20th richest
Forbes values him at $95.6 billion on 12 November 4.
Frequently asked questions
In 2019.
In 1965.
Sources✓ Verified 14 Nov 2026
1 Telltales, Founder stories: Interactive Brokers, 1 Jan 1970, CEO step-down
2 Powerbase, Thomas Peterffy, 20 Oct 2026, Emigration
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