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Peter Fenton - $1.4 billion
Peter Fenton isn't a Twitter co-founder or executive, but he is the No. 2 individual shareholder with 6.7% of the company. That made him an instant billionaire on Thursday.
Fenton, a prominent partner at venture firm Benchmark Capital, backed Twitter in its very early days and now sits on the company's board of directors.
Benchmark Capital itself also owns a 6.6% share of Twitter.
- Last updated January 07 2014 03:28 PM ET
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