The US stock market is once again being led higher by technology giants, with NVIDIA Corporation closing in on a historic $5 trillion market valuation. As of 11:27 UTC, the company's stock was trading at approximately$201.03 per share, giving it a market capitalization of about $4.53 trillion.NVIDIA's rise reflects the continuing enthusiasm surrounding artificial intelligence and advanced computing. Its shares gained more than 3 percent in premarket trading, extending a rally that has made the company the ...