3. Sept. 17, 2001
Close: 8,920.70
Net loss: 684.81
Percentage change: -7.13

Stocks plummeted on the first day of trading after the September 11 terrorist attacks, which closed stock exchanges in New York for four trading days. Investors questioned whether the attacks would drag the United States into a recession.

Here, a trader wears a dust mask while standing next to a "Wanted, Dead or Alive" poster with the face of Osama bin Laden.

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