Here's what you need to know about the Dow index changes By: CNBC.com News September 10, 2013 at 12:17 PM EDT Three new companies - Goldman Sachs, Visa, and Nike - will replace current Dow Industrial Average components before the market opens on Sept. 23. Read More >> Related Stocks: Alcoa Apple Bank of America Goldman Sachs Group Google, Inc. Hewlett-Packard