After Friday’s closing bell, S&P Global announced that Block Inc. (XYZ) will be added to the benchmark S&P 500 Index ($SPX) effective before the start of trading this Wednesday, July 23. Jack Dorsey-led Block joins the index following Chevron's (CVX) acquisition of Hess Corp.

An extremely rare indicator just flashed, which is highly accurate in predicting a significant stock market move over the next 12 months.

Major U.S. equities indexes were mixed Tuesday as investors reacted to the latest earnings reports and prepared for Big Tech results due tomorrow.

The S&P 500 index is one of the most widely followed stock market indexes in the world, with trillions of dollars managed based on its makeup. When companies are added or removed from the index, it forces buying and selling in those companies’ shares by index funds that aim to track the performance of the index.

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The Standard & Poor’s 500, or S&P 500, is a stock market index that measures the stock performance of 500 large companies listed on stock exchanges in the United States. It’s one of the most ...