Born On Your Day

billionaireentrepreneurTop tier

Alexander Gerko

Entrepreneur · born December 3, 1979

$13.4Breported net worth as of September 2025 · Bloomberg

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About

Alexander Gerko is a Russian-born British billionaire financial trader and founder of XTX Markets based in the United Kingdom. Gerko has a Ph.D. in mathematics and wrote several research papers, including one that tested market timing for trading.

Adapted from Wikipedia (CC BY-SA 4.0).

Reported wealth

Each figure is a dated estimate from the publisher shown; wealth changes, and nothing here is live.

As ofEstimateSource
September 2025$13.4BBloomberg · current

Sources

Every fact on this page traces to one of these.

Sources (3)

Also born on December 3

Alexander's most notable birthday twins

Chey Tae-won
billionaire

Chey Tae-won

Entrepreneur

1960 · South Korea

$4.7Breported estimate as of July 2026 · Forbes

Chey Tae-won is a South Korean billionaire businessman and the chairman of SK Group, the country's second largest conglomerate, that includes 186 subsidiaries such as SK Telecom, SK Hynix, and SK Innovation.

Republic of Korea, CC BY-SA 2.0, via Wikimedia Commons

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Sources (3)
Sean Parker
billionaire

Sean Parker

Entrepreneur

1979 · United States

$3Breported estimate as of May 2025 · Forbes

Sean Parker is an American entrepreneur and philanthropist, most notable for co-founding the file-sharing computer service Napster, and was the first president of the social networking website Facebook.

Amager at English Wikipedia, CC BY-SA 2.0, via Wikimedia Commons

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Sources (3)
Ozzy Osbourne
musician

Ozzy Osbourne

Musician

1948–2025 · United Kingdom

John Michael "Ozzy" Osbourne was an English singer, songwriter, and media personality. Dubbed the "Prince of Darkness", he is widely credited as a pioneer of heavy metal music.

F darkbladeus, Public domain, via Wikimedia Commons

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Amanda Seyfried
actor

Amanda Seyfried

Actor

1985 · United States

Amanda Michelle Seyfried is an American actress. Her accolades include a Primetime Emmy Award and a Golden Globe Award, as well as a nomination for an Academy Award.

Elena Ternovaja, CC BY-SA 3.0, via Wikimedia Commons

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Sources (2)