Is there a stock market crash coming?

For months, the share prices of tech companies have marched seemingly-ever upward, driven by fevered excitement about the potential of Artificial Intelligence. But many are now voicing fears that this surge might turn out to be a bubble, which could burst with damaging effects.So do we have to rely on vibes? Or can we use data to tell us about the risk that AI might go pop?Nathan Gower discovers what the numbers tell us about the health of the stock market.Guests: Katie Martin, markets columnist at the Financial Times Simon French, Chief Economist and Head of Research at investment company Panmure LiberumPresenter and Producer: Nathan Gower Series Producer: Tom Colls Editor: Richard Vadon Sound Engineer: Andy Mills