Three not so lucky number with Dow index changes By: CNBC.com News September 10, 2013 at 12:35 PM EDT Although history shows that new companies added to the blue-chip index generally outperform, there have been a few notable exceptions. Read More >> Related Stocks: Alcoa American International Group Bank of America Cisco Systems Goldman Sachs Group Hewlett-Packard Kraft Foods Group Nike Inc Pfizer TravelersCompanies UnitedHealth Group Verizon Communications Visa