10 start ups fastest to reach a valuation of over $2 billion

The above chart from businessinsider shows the list of the  start ups which reached valuation upwards of 2$billion and more  in the fastest record time .Slack, Groupon and Akamai  are among the  list of top 3 brands  followed by  Akamai, Xiaomi and Calient tech . To know more about these start up, you can explore their detailed coverage here