The S&P 500, Dow & Nasdaq Since 2000 Highs as of September 2025

The S&P 500, Dow Jones Industrial Average (Dow), and Nasdaq Composite are all stock market indexes used to measure the performance of various aspects of the U.S. stock market. The indexes generally rise and fall together, however the extent of gains or losses produced by each can differ depending on market conditions and the state of the economy. The indexes differ in several key ways such as weighting methods, coverage, and criteria for including stocks. The S&P 500 assigns weightings based on market capit ...