Zeljko Ranogajec – $439 Million

Zeljko Ranogajec is known in the gambling world as “The Joker.” He is notorious for making huge profits from different games, including sports betting, horse racing, blackjack, and keno.

He mastered banking, finance, and tax legislation as a skilled mathematician. While working at a casino, Ranogajec learned how to count cards. Ranogajec mastered it so well that he got banned from every casino in Australia and Las Vegas. He holds the record for the biggest win in keno, with $7.5 million. Now, his wealth stands at $449 million.

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