It is a common practice for investors to look back and see how a fund was doing in the past, before they decide to buy its shares. But since the gloomy days of the bear marker are behind us, many investors have nothing but good things to see, The Wall Street Journal reports.

According to Morningstar, over the past three years, U.S. stock funds have gained an average of 17.79% a year. In comparison, the three-year track record ended three months earlier, the average was 9.33%, and for the three-year track record ended three months prior to that, it was 4.08%.

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