A number of mutual-fund management complexes employ the practice of starting “incubator” funds. A complex may start ten small new equity funds with different in-house managers and wait to see which ones are successful. Suppose after a few years only three funds produce total returns better than the broad-market averages. The complex begins to market those successful funds aggressively, dropping the other seven and burying their records. —BURTON G. MALKIEL, A RANDOM WALK DOWN WALL STREET
