The Morningstar Andex chart for the US equity market is one powerful one-page that packs a ton of information for investors. The chart shows the growth of $1 from 1926 to 2022 in various asset classes. It also other useful information such as economic expansions and contractions, S&P P/E, inflation and interest rates, geo-political events, etc.
Over the time period shown in the chart US small cap stocks were the best with an average annual return of 11.8% while large caps returned 10.1%. It should be noted however that it is unlikely there is some investor that held their investments all the way from 1926 till 2022. So the past 30 year returns are shown in the mini-chart within the big chart below. Again small caps beat large caps as shown below in the blue line.
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Source: Morningstar
Updates (11/18/23):
1.The 2016 US Morningstar Andex Chart:
Source: Morningstar
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Disclosure: No positions