"When"s the best time to "buy" and when to "sell" stocks? How can differentiation help?"The measure of the industrial, economic strength of the United States, known as the Dow Jones Industrial Average (after two of its founders: Charles Dow and Edward Jones) was established on the 26th May 1896, and was the average share price of stocks in the twelve largest US companies.Today, the Dow Jones (for short) is a weighted...