American company Nike will be removed from the S&P 100 index on September 21st, signaling a shift in market perception. The S&P 100 represents the 100 largest companies by market capitalization from the broader S&P 500 index. The S&P 500 itself encompasses roughly 80 percent of the total value of the American stock market. Nike's departure reflects ongoing changes within the company, though these are reportedly progressing slowly. This move indicates a reassessment of Nike’s position among the top-performing large-cap stocks in the United States. The changes come as Nike works to implement broader restructuring initiatives. The news highlights the dynamic nature of the American stock market and the evaluation of leading corporations.