Am I missing something or is this a bug in X Trader?..... So the market is say 56.25 .50 offered. various red prints at .25 are streaming down the Time & Sales tape, and blue prints at .50. So far so good. Then, a few blue prints go off at .25, then some red at .25, a few blue, then red again. The quote hasn't changed. Whats up with the blue (aggressive buy) hitting the bid? The only thing I can think of is: 1. perhaps the quote changing way to quickly to actually see - but that seems unlikely as it happens when there is plenty of size on the bid and offer - and it doesnt change significantly compared to the corresponding prints 2. cross trades going through, but then you'd expect to see matching size trades, but that doesnt happen. Any ideas?