There have been no signs of easing anxiety in the stock markets despite record Nvidia results. 

Investment director for Craigs Investment Partners Mark Lister told Heather du Plessis-Allan that the apprehension is a result of not wanting to overestimate the appropriate levels of optimism.

"It's more of a case of a healthy pullback, a healthy correction rather than something that's going to develop into anything more sinister," he said.

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