About Twitter: What is Twitter?

Twitter is a social networking platform that allows its users to send and read micro-blogs of up to 280-characters known as tweets.


  • Elon Musk


  • Biz Stone
  • Evan Williams
  • Jack Dorsey
  • Noah Glass


  • San Francisco
  • California
  • United States

Valuation (Postmoney) or Market Cap:

$44 Billion

Total Raised:

$12.9 Billion

Founding Date:

March 21, 2006

Investors (People):

  • Alwaleed Bin Talal
  • Bill Tai
  • George Zachary
  • Greg Kidd
  • Saar Gur
  • Mike Maples Jr.‌
  • John Levinson
  • Ann Miura-Ko
  • Naval Ravikant
  • Elon Musk
  • Marc Andreessen
  • Ron Conway
  • Dick Costolo

Investor Firms:



  • Blogging Platforms
  • Messaging
  • SMS
  • Social Media
  • Apps

Financing Round:

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