40 under 40

Our 2013 edition of the list features young hotshots who are rocking businesses as diverse as air travel, natural gas, and genetic coding, as well as—if you can believe it— government.

28. Daniel Ek (TIE)

40u40 daniel ek spotify
  • Age: 30
  • Title: Founder and CEO
  • Company: Spotify

Spotify has more than doubled its revenue for each of the past three years, but it has had to pay out $500 million in royalties since 2008 and will owe $500 million more this year. Still, users love it: 14 million new ones since the beginning of 2012.

  @FortuneMagazine - Last updated September 30 2013 03:41 PM ET
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