Nvidia gains $200bn in value after it predicts AI-driven boom in chip demand

Shares in US tech firm jump by 24% in after-hours trading as quarterly revenue forecast excites investorsThe value of the US tech company Nvidia has soared by almost a quarter after it predicted a boom in demand for its computer chips to meet the needs of artificial intelligence products such as ChatGPT.Nvidia’s share price rose by 24% in after-hours trading on the back of the announcement, and put it on course for a market valuation well over $900bn (£730bn) when stock markets open