Are vanguard's managers good stock-pickers or style-pickers?
Jared Kizer's article in the Winter 2005 issue indicates for Vanguard's managed funds that the return to stock-picking skill is not enough to offset the additional transactions costs of a managed portfolio. Thus, the superior performance of Vanguard's managed portfolio was due entirely to its tendency to overweight small stocks and value stocks relative to the index portfolio during a period when stocks with these two characteristics outperformed the market. So, it is style-picking skill rather than stock-picking skill that leads to the superiority of the managed portfolio in this particular instance. Similarly, style-picking skill explains the lower risk for the managed portfolio.