The billionaire investor also said the bubble needs to be popped.

The billionaire investor also said the bubble needs to be popped.

“I think the picture is pretty clear in that we are in that territory of a bubble … but we don’t have the pricking of the bubble yet,” Dalio said.

"Generally, when you're gripped by a bubble, people just don't want to listen because they're making so much money," warns Albert Edwards.