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How did the average equity fund perform vs. the market, 1983-1998?
 

Worse than the market?
Equal to the market?  
Better than the market?  


The correct answer is:
Worse than the market

Explanation:


Mutual fund 
Expenses Matter
Many Funds Beat The Market...


Gross Returns for Equity Funds Compared to the Market*, 1983-1998†

        107 funds  
    93 funds      
           
           
           
    Better
Than the Market
  Worse
Than the Market
 

...Until You Account For Expenses


Net Returns for Equity Funds Compared to the Market*, 1983-1998†  

        167 funds   
           
           
           
    33 funds       
           
    Better
Than the Market
  Worse
Than the Market
 

*Wilshire 5000 Index.
†Growth and value equity funds that were available in 1983 and still available June 30, 1998
Source: adapted from Bogle, Common Sense on Mutual Funds, 1999

managers, and the trades they execute, make up a very large part of the overall stock market. So all other things being equal, you would expect their performance to be roughly equal to that of the market. 

But it turns out that all other things are not equal. Actively managed mutual funds incur more costs--manager compensation, trading costs, and even taxes--than an investor in a broad, passively-managed index fund would incur. (See "Expenses Matter", at right.) If you measure mutual funds by their gross return, it turns out that over the period 1983-1998 their performance is close to equal that of the market (measured here as the Wilshire 5000 index). But investors in mutual funds don't earn gross returns (which are the returns mutual funds usually advertise, and are reported broadly, including in our Mutual Fund Screener).

Instead, investors earn a net return--the gross return of the mutual fund less the fund's expenses, including marketing, trading, and administration. Those expenses, which can easily be 2% annually of an investor's investment in a fund, make quite a bit of difference over time. Factoring expenses in, John Bogle reported in the book Common Sense on Mutual Funds that only about 16% of the equity funds in that period outperformed the market. Keep in mind, too, that these figures are a bit biased, since funds with exceptionally poor returns would have been shut down or merged during the period.

More about mutual funds: 
Mutual Funds 101
Books by John Bogle

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