High-frequency trading faster than the speed of reality

Machines for High Frequency Trading (HFT)

On April 23 at 1:07 pm, a hijacked AP Twitter account falsely reported an attack on the White House. Just seconds later, major US stock indexes started to fall. They were down 1 percent by the time the tweet was publicly identified as bogus three minutes later. And in another three minutes, the markets had recovered to pre-tweet levels.



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