They say one picture is worth a thousand words (and a big thanks to TheContraryInvestor for the chart. His weekly reports are invaluable.)
Here is why the slumping airlines do not affect the Dow Transports Index significantly.
We do not understand the rationale, but we were quite surprised to see how little they contribute to it.
“Depart from me, you accursed. For I was hungry and you gave me no food, thirsty and you gave me no drink, a stranger and you did not welcome me, naked and you did not clothe me, sick and in prison and you did not comfort me.' They answer, 'Lord, when was it that we saw you hungry or thirsty or a stranger or naked or sick or in prison, and did not care for you?' He answered, 'Truly I tell you, as you did not do it to one of the least of these, you did not do it for me.’”
Matthew 25:40-46