The 9/11 terror attack on New York killed 2,753 people and in the two decades since, the scale of the losses for the city and Wall Street still stagger. Three out of every four people who worked in New York for the brokerage Cantor Fitzgerald, 658 in all, died when the North Tower collapsed.
At the boutique bank Keefe, Bruyette & Woods, 67 of the 171 New York employees were killed when the South Tower fell. At Aon, 176 were killed.
The list goes on.
On this 20th anniversary, Wall Street looks back.