The net worth of the world’s billionaires fluctuates widely based on the stock valuations of the companies they hold shares ...

Big Tech stocks retreated in early trade on Thursday after helping to propel the Nasdaq Composite north of 20,000 for the first time one day earlier. Six out of seven members of the Magnificent Seven ...

Their two firms, Nvidia and Tesla, are part of the “Magnificent Seven" which now account for a third of the S&P 500’s market ...