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The average return has been 8.8% since 1926, including 20 years with loses[1]. [1] https://www.vanguard.com/us/insights/saving-investing/model-portfolio-alloca

• kgwgk 8y ago
  These are nominal returns, real returns are worse. And the returns over 10 years, for example, are quite irregular and can be negative. And over the next 10 years one should expect to get lower-than-average returns because valuation is high currently. https://www.researchaffiliates.com/en_us/publications/articles/313_year_end_capital_markets_commentary_and_forecast_yesterdays_gone.html https://www.researchaffiliates.com/en_us/publications/articl...