Last couple of days I've been using IB charts. I am seeing very different data when compared to a QT chart. Here's what I'm not getting: My broker is IB. My charting software is QT. Why isn't a candle on a QT chart not exactly the same as a candle on an IB chart if I am getting my data from IB? As you know, this makes a difference on entry/exit decisions. Why do these discrepancies exist? I executed a trade today on a particular candle @ 26.27. It was executed on the bottom of the candle on the IB chart. QT shows this particular candle had a low of 26.26. The IB T&S data indicates that no trades took place below 26.27 on this particular candle. I realize the IB data does not show every tick, but again, since I fill my QT charts with IB data, why are the charts not identical?