Trading Faster Than The Speed Of Reality

Editor's note:?Michael Wellman is a professor of computer?science and engineering at the University of Michigan College of Engineering.? At?1:07 p.m.?on?April 23, a hijacked AP Twitter account falsely reported an attack on the White?House. 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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