America’s wealthiest tech billionaires added more than $550bn to their combined net worth this year, as they benefit from an investor frenzy around leading artificial intelligence companies.
The top 10 US tech founders and chief executives possessed more than $2.5tn in cash, equity and other investments at the close of trading in New York on Christmas Eve, according to Bloomberg data.
The figure is up from $1.9tn at the beginning of this year and comes as the S&P 500 climbed more than 18 per cent.
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