Founded in 1993, Nvidia was originally known for making the type of computer chips that process graphics, particularly for computer games. Long before the AI revolution, it started adding features to its chips that it says help machine learning, investments that have helped it gain market share. The company, which became worth $1tn less than a year ago, now ranks as the world’s fourth most valuable publicly traded company, behind Microsoft, Apple and Saudi Aramco. Are Nvidia shares worth investing in ?

