Chris Grayling MP has eased fears of a recession once the UK leaves the EU.
One of the main arguments of the Remain camp was economic uncertainty. Grayling dismissed this idea.
"There was always going to be a degree of turbulence," he told Julia Hartley-Brewer. "Some of the early losses have now been regained, and there's already been a bounceback of the share prices.
"It often happens when there is a big story, the markets fall sharp and then recover ground.
"The reality is we're still in the European Union. We just need to be very careful, move forward in an thoughtful way, but I'm cautiously optimistic."
Grayling insisted care was absolutely vital as the UK navigates its way out of the EU.
"What matters now is we ensure stability," he said. "We have to be very clear we're going to take the country forward in a careful way.
"We won't do things that won't destabilise the system. We realise the importance businesses of getting this right.
"So people should expect an process in which we get this ready long before we trigger the mechanism for leaving."