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Behind the biggest conceptual change in the evolution of blogging. The easy way to blog: post text, photos, quotes, links, music, and videos from your browser, phone, desktop, email or wherever you happen to be, and customize everything.

Traditional media and advertising markets.

Source: Tumblr

Headquarters: New York, NY
CEO: David Karp
Year Founded: 2007
Number of Employees: 174
Funding: $125 million
Key Investors: Sequoia Capital, Greylock Partners, Union Square Ventures, Spark Capital and Insight Venture Partners

Vital Stats

  • Ranks 40th among most-visited U.S. websites, right behind Netflix (Comscore)
  • 80 million unique visits a month/222 million globally (Quantcast)
  • 106.7 million blogs
  • 50 billion posts
  • 71 million daily posts
  • Average deal size for Tumblr advertising is six figures
  • Clients include GE, AT&T, Pepsi
  • The 10 top film studios are now advertising on Tumblr
  • Mobile growth rate 4 times over past six months

On Disruption

"Disruption is democratizing what was once wholly owned by influencers at big institutions." -David Karp, CEO and Founder


  • Apple shares have lagged the market recently, and the stock will continue to come under pressure heading into next year, according to one trader.

  • Woman scanning barcode shopping app

    The consumer is now empowered with price-comparison apps that offer everything—from price drops alerts to retail trends.

  • Tencent Holdings sign

    Goldman Sachs recommended several Chinese Internet stocks spurred by the inclusion of 14 U.S.-listed names to the MSCI China index.

Latest Special Reports

  • Taking THE PULSE of the technology sector with must-know industry news, new products, trends and perspectives beyond the headlines.

  • Advisors say it's time to get serious about year-end financial plans, like taxes and portfolio re-balancing.

  • Special coverage of the COP21 climate change summit.