RE: China’s GDP is nowhere near $18 trln.
How much do you think is China’s GDP ?
But anyway....
Nvidia alone accounts for 44% of the rise in value of the S&P 500 since the end of 2021, just before the Federal Reserve’s planned interest-rate rises hit the market. Microsoft, one of Nvidia’s largest customers, is the next biggest contributor at 14%.
Probably closer to $10bln. Their numbers are completely made up.