It doesn't sound like you are accounting for the re-invested dividends which will put a 10 year investment well above that 50% return you mentioned. This quick

It doesn't sound like you are accounting for the re-invested dividends which will put a 10 year investment well above that 50% return you mentioned. This quick site that I found says the DJIA is up 110% over the last 10 years if you reinvest dividends. https://dqydj.com/dow-jones-return-calculator/ https://dqydj.com/dow-jones-return-calculator/