The selloff in Boeing Co.'s stock is accounting for half of the drop in the Dow Jones Industrial Average, which is a price-weighted index. The aerospace giant's stock was down $3.88, or 2.5%, in midday trade Monday, following a downgrade by Goldman Sachs. That decline, which is the most among Dow components on Monday, is shaving 25 points off the price of the Dow, which is down about 49 points. Boeing's stock, which closed at a record high on Friday, is still up 16% over the past three months, while the Dow is up 1.6%.
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