using the ever-so-fast and reliable Lightspeed with Nasdaq-traded equities, every once in a while, I see a "wild-and-crazy" print, usually of high volume come across several cents outside of the Best bid and ask. Can someone explain to me what causes this ? Is it possibly a case where these trades have a correct time-stamp, yet the ECN's are late in posting them to the electronic feed ? Since I can't "see" the timestamps, it's difficult to discern. Any help or explanation greatly appreciated !