Technology companies continue to be some of the most valuable private companies in the world, according to PitchBook's most recent list of the highest valuations of VC-backed companies.
Uber tops the list as of May 2018, but it's followed closely by its Chinese competitor, DiDi. In fact, there are a total of five ride-hailing companies on the list; Lyft, Indonesian GO-JEK, and Singapore's Grab are also on there.
