Growing Numbers of Start-Ups Are Worth a Billion Dollars - NYTimes.com

A cloudy future

"But an unprecedented number of high technology start-ups, easily 25 and possibly exceeding 40, are valued at $1 billion or more. Many employees are quietly getting rich, or at least building a big cushion against a crash, as they sell shares to outside investors. Airbnb, Pinterest, SurveyMonkey and Spotify are among the better-known privately held companies that have reached $1 billion. But many more with less familiar names, including Box, Violin Memory and Zscaler, are selling services to other companies.
“A year from now that might be 100,” said Jim Goetz, a partner at Sequoia Capital, a venture capital business. Sequoia counts a dozen such companies in its portfolio. It is part of what he calls “a permanent change” in the way people are building their companies and financers are pushing up values."

Growing Numbers of Start-Ups Are Worth a Billion Dollars - NYTimes.com