Nvidia vaults past Apple and Microsoft to become world's most ...

Jensen Huang walks on stage before the keynote address at the Nvidia GPU Technology Conference earlier this year. Nvidia chief Jensen Huang says the company is at the centre of a new industrial revolution but a tech strategist says 'animal spirits' are taking over and the share price climb is abnormal. Photo / Eric Risberg, AP

Nvidia has leapfrogged Microsoft and Apple to become the most valuable company in the world, following months of explosive share price growth driven by demand for its chips and an investor frenzy over artificial