Standard & Poor’s (S&P) is a financial services company known for its stock market indices, credit ratings, and research services. It is one of the three major credit rating agencies, along with Moody’s and Fitch Ratings, and is widely regarded as a leading provider of independent credit analysis and risk assessment.
S&P is best known for its S&P 500 Index, which tracks the performance of 500 large-cap U.S. stocks and is widely used as a benchmark for the broader stock market.