Trading Day: Tech momentum accelerates as Fed looms

Tesla surged on CEO Elon Musk 's $1 billion share purchase, Alphabet joined the $3 trillion club, and the communication services sector rose 2.3% - despite Nvidia's lackluster performance on news of China's probe. The sector is now up 27% this year, more than double the S&P 500 index's 12% gain.Whether it be price, valuation, or concentration, investors know there are reasonable grounds to at least be cautious on the U.S. tech/AI boom. But it shows no sign of slowing, far less reversing, and on Monday it br ...