3.4 bln shares traded in May 2006 on US stock markets

Investment Technology Group announced that May 2006 US trading volume was 3.4 bln shares and average daily volume was 156 mln shares. This compares to 2.7 bln shares and ADV of 143 mln shares in April 2006 and 1.9 bln shares and ADV of 91 mln shares in May 2005.