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Jack Dorsey

Benjamin Wachenje

Title: Chairman and co-creator, Twitter; CEO, Square

Born: November 19, 1976, St. Louis, Missouri

Education: New York University (dropped out)

Early Marker: Created open-source logistics software for taxi dispatch.

Big Idea: Microblogging and messaging in 140 characters; now working on platform for small businesses to accept card payments on a mobile device.

Wave of the Future: M-economy, App-economy, social media

Latest Special Reports

  • Top States 2016

    CNBC's annual study measures all 50 states on more than 60 different metrics.

  • People walk amongst aircraft exhibited on the tarmac during the opening of the International Paris Airshow at Le Bourget on June 15, 2015.

    The International Paris Air Show is celebrating its 52nd anniversary this year with the big movers and shakers in the aerospace and defense industry all attending the event.

  • CNBC’s “Trailblazers” travels across the globe bringing insight into some of the world’s key cities through the eyes of the celebrities that live there.

CNBC25: Rebels, Icons and Leaders