Nvidia re-takes Apple’s ‘world’s most valuable’ crown again
Chip firm's market cap hits $3.45 trillionSurging demand for GPUs crucial for AI applicationsNvidia stock averaged 86.8% annual gain over five yearsAI chip champion Nvidia (NVDA:NASDAQ) has regained the top spot as the world's most valuable company after a 5% turnaround versus Apple (AAPL:NASDAQ) overnight.Nvidia shares closed the session on Tuesday (21 January) up 2.3% at $140.83 for a $3,449 bil