Uday Kotak described SpaceXs blockbuster IPO as a test for capitalism, questioning whether investors are backing humanitys future or fueling a massive bubble. His remarks came after the companys debut propelled Elon Musk to trillionaire status and lifted SpaceX into the worlds corporate elite.

Most of the value in SpaceX's IPO is effectively a call option on the company's ambitious space data center plans.

Inside Business podcast with Ciarán Hancock

Hype and hope collide in the biggest IPO in history

SpaceX’s IPO, set to be the largest ever, would also propel Musk to become the world’s first trillionaire.