Amazon’s stock could lose Walgreens’ this year if the Dow jinx holds

The keepers of the Dow Jones Industrial Average have been very good at making sure the changes they make to the venerable stock-market barometer are seamless to investors, but nobody’s perfect. How the 128-year old index DJIAis constructed is a secret closely guarded by S&P Dow Jones Indices. But some things, such as the influence each stock has, are known once changes are made.There’s also the matter of the “Dow jinx,” which has seen new members tend to underperform