Owning the S&P 500 and Nasdaq-100 through low-cost index funds captures tomorrow's winners as they emerge without predicting them, since both indexes keep replacing fading companies with stronger ones. Since inception, the S&P 500 fund is up about 814% and the Nasdaq-100 fund about 1,683%. Contribution rate matters more than timing: $400 a month at 10.5% for 30 years grows to about $876,000, double the $438,000 from $200. x.comÂ
