Technology and energy companies powered gains for US stocks overnight, lifting the benchmark S&P 500 higher for the week and..
Stock market index
The Standard and Poor's 500, or simply the S&P 500, is a stock market index tracking the performance of 500 large companies listed on stock exchanges in the United States. It is one of the most commonly followed equity indices. As of December 31, 2020, more than $4.6 trillion was invested in assets tied to the performance of the index.