Jack Welch.
(Image credit: Mike Coppola/Getty Images for LinkedIn)

Jack Welch, the former CEO and chair of General Electric, died late Sunday at age 84, his wife confirmed Monday.

Welch died of renal failure, per his wife; he retired from GE in 2001. Welch oversaw GE for two decades as its market value ballooned from $12 billion to $410 billion, for a time the world's second-most valuable company, reports CNBC.

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Kathryn Krawczyk

Kathryn is a graduate of Syracuse University, with degrees in magazine journalism and information technology, along with hours to earn another degree after working at SU's independent paper The Daily Orange. She's currently recovering from a horse addiction while living in New York City, and likes to share her extremely dry sense of humor on Twitter.