trade then - trade

  1. 52 Posts.
    168.5 -7043 13.09:34 18-oct-2010 XT
    168.5 7043 13.09:34 18-oct-2010 XT

    On one of the shares a watch on comsec iress, there are a lot of trades that occur then get taken back..

    How can this happen? do trading/ algo bot make mistakes?
    it all happened at the same instant/ time.
 
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