DJIA Changes - Interesting, Yet Meaningless
On 8/31/20, the Dow Jones Industrial Average went through a change in composition. Out went Exxon, Pfizer and Raytheon. In came Salesforce.com, Amgen and Honeywell. This is the 8th time the Index components have changed this decade, the 13th time since 2000 and the 55th change since created in 1896. So changes are not uncommon. But, are they meaningful? Ask any academic and you’ll get a resounding “NO.” There is no stated criteria for selection, no metrics for inclusion, no breadth to the number of companies (which has changed significantly over time,) and not even a weighting for market capitalization! The DJIA has no relationship to “the market,” which could well be measured better by the S&P 500, or the Russell 3000. And it doesn’t even link to any specific industry! To academics, “the Dow” is just a random number that reflects nothing worth measuring!!
Finance, Investing, Strategy, Trends