In 2007, Josh Kopelman of First Round Capital compiled a list of bubble predictions by year and ended his post by stating, “Even a broken clock is right two times a day. By proclaiming a bubble every year, everyone can say they “called it.” Since we started CB Insights in 2010, we’ve been asked the question every year as well. In late 2015 and into early 2016, those bubble proclamations hit a fever pitch especially after the pace of unicorn births picked up in Q2’15 and Q3’15 with 23 new unicorns joining the club in each quarter. That rapid increase in paper unicorns was nicely captured in this graphic.

https://www.cbinsights.com/blog/data-unicorn-bubble/