Nanex ~ 03-Jan-2013 ~ Nasdaq Stocks Stop Trading for 14 minutes
Ultimate Dark Pool Trading
Direct Edge's Very Late Trades
Late EDGX Trades in SPY
Look for dots in a vertical line. This is when trades that executed earlier were blasted out all at once when the network outage ended. Also look for light blue diamonds, which are trades from EDGE-X. In many stocks, trade reports from EDGE-X were severely delayed, sometimes exceeding 5 minutes.
X-Axis is time of day (Eastern). Y-Axis is price. Gray shading is NBBO. Trades color coded by reporting exchange according to the legend on each chart.