The chip-maker Nvidia has set a Wall Street record thanks to investors’ enthusiasm for atificial intelligence (AI), boosting its market capitalization by around $277 billion in one day. The market value of the semiconductor specialist approached the $2 trillion mark on Thursday. The previous day, Nvidia had presented quarterly figures with strong growth in turnover and profit and once again significantly exceeded analysts’ expectations. Chief executive Jensen Huang also held out the prospect of further growth. Nvidia shares rose by 16.4% to $785.38 on Thursday. They continued to rise in after-…