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Fever chart: What Apple replacing AT&T does to the Dow

March 6, 2015, 2:44 PM UTC
Reuters

The chart above was created using a tool posted last Friday on thomsonreuters.com. It calculates the theoretical results of replacing any component of the Dow with Apple.

The component to be replaced turned out to be AT&T — the company that Steve Jobs talked into carrying the original iPhone.

The switch is scheduled for March 19.

Follow Philip Elmer-DeWitt on Twitter at @philiped. Read his Apple (AAPL) coverage at fortune.com/ped or subscribe via his RSS feed.