Past performance is a poor predictor of future mutual fund returns
JM
Jordan Monroe
Dave Ramsey · Apr 13, 2026
Source: DojiDoji Data Terminal
Investing in mutual funds based on 10-year historical outperformance of the S&P 500 reduces the probability of future gains. A financial advisor's fee is typically around 1%, meaning the fund must outperform the market by at least that amount to justify the cost.
Dave Ramsey recommends using an advisor to identify funds with a long track record of beating the market. However, data shows that mutual fund performance does not reliably persist. A fund in the top quartile of its category has a 29% chance of being in the top quartile after three months, but that probability drops to 25%—the same as a random selection—after one year.
Over the long term, the probability of beating the index is significantly lower. Between 85% and 98% of actively managed funds underperform their index over a 20-year period. This underperformance is compounded by higher turnover costs and advisory fees, which are deducted from returns.
Low costs are a better predictor of long-term performance than past performance.
Dave Ramsey
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