With index funds, the average outperforms By: MarketWatch February 02, 2012 at 21:03 PM EST One rap on indexing is that you are guaranteed nothing more than average results. In fact, index funds may be ‘average,’ but the average can outperform. Read More >> Related Stocks: Vanguard Index Trust 500 Index Fund Vanguard Index Trust Mid-Cap Index Fund Vanguard Index Trust Small-Cap Index Fund