WATCH: Why unicorns have lost some of their allure

Over the past few months we have seen the initial public offering (IPO) market go from hot to not, with proceeds slowing by more than 50% in the third quarter compared with the second quarter.

Unicorns, the name given to start-ups with private valuations of $1bn or more, have recently lost large amounts of money.

John Colley from the Warwick Business School shares his insights into the matter with Business Day TV.