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Stock soar after Nvidia's earnings defy fears of an AI bubble.

Live from the UK, this is the Marketplace Morning

Report from the BBC World Service. I'm William Lee Adams. Good morning. Global shares received

a boost today, cheered by better than expected results from US chip giant in VDivya. But despite

the optimism, the artificial intelligence boom continues to spark fears of a market bubble. A growing number

of the world's leading figures in finance have suggested that AI stocks are unrealistically

inflated in value. The BBC's Ed Butler's been looking at the issue. History tells us this sentiment

can turn on the dime. That's Kristallina Georgieva, head of the IMF, one of the biggest figures in international finance.

Even leading Silicon Valley investors like Jerry Kaplan are now weighing in.

We're in the middle of an enormous economic bubble.

What we're seeing is this process of this thing feeding on itself,

and when it collapses, it's going to be very bad. As everyone in Silicon Valley remembers,

we have been here before. The internet appliance provider got hammered today, losing over

10 points after Bear Stearns issued some cautious comments on the stock. Technology stocks got trounced

on the day of... Some of the new economy.coms are sinking cautious comments on the stock. Technology stocks got trounced on the day of...

Some of the new economy.coms are sinking as fast as the level of the tide on the Thames.

...