Larry Ellison stepped down as CEO of Oracle on Thursday, marking one of the most spectacular runs for a tech CEO in modern history.
Ellison, who is staying on as executive chairman and CTO, isn't just known for amassing a fortune (the current estimate is around $48 billion), but for being rather badass. Partially that's because he didn't follow the standard prep school-to-Ivy League trajectory of many chief executives. Ellison grew up in the hardscrabble South Side of Chicago and parlayed his skills in math, programming and salesmanship into what is now a $182 billion tech powerhouse. All of that started with a $1,200 investment in 1977.
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