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Revenue (TTM): $616.7 million
Ticker: LNKD

If you’re looking to find new job leads or a potential business partner, you may have turned to the world’s largest online professional network to review one of the more than 90 million member profiles in over 200 countries. The company started out in the living room of co-founder Reid Hoffman in 2002 and is now growing at a rate of approximately two members per second.

Photo: David Paul Morris | Bloomberg | Getty Images