Nanex ~ 10-Jan-2013 ~ 2 Minute Quote Blasts
The charts below show bids and asks color coded by exchange and NBBO (gray shading)
in the stock of KMG Chemicals (KMG) on January 10, 2012. Note the regular blast of quotes appearing every 2 minutes. Each blast lasts about 12 seconds with over 1000 quotes in each second. There are only 3 trades.