Where to look for the next billion-dollar unicorns By: CNBC.com News May 05, 2015 at 08:00 AM EDT Unicorns, start-ups valued at $1 billion or more, are Silicon Valley's sexiest bets, and it's a trend that is about to become increasingly global. Read More >> Related Stocks: AT&T Inc Apple Atlantic Power Corp Cisco Systems Facebook General Electric Google, Inc. International Business Machines McDonald's Corp Oracle Corp Telefonica S.A. ADR Yahoo