The S&P 500, Dow, and Nasdaq have experienced fluctuations since reaching their highs in 2000. The S&P 500 hit a peak in March 2000, but then went through a significant decline over the next two years, before eventually recovering and surpassing its previous high in 2007. The Dow Jones Industrial Average also peaked in early 2000, but faced a similar decline and recovery pattern as the S&P 500. The Nasdaq Composite Index, which is heavily weighted towards technology stocks, saw a dramatic rise in the late 1990s before crashing in 2000. It took the Nasdaq over 15 years to reach its pre-2000 high again. Overall, these major indices have shown resilience and the ability to bounce back from market downturns over the years.