I use QT with IB's TWS as data source. One problem I've been having is that the daily chart always have the candlesticks for the current day and the prior day messed up. It seems as if they are combined into one bar. Check out today's chart below. With this problem, it's hard to tell how the bars are shaping up as you daytrade. QT+TWS is a popular combo here so I'm guessing I'm not the only one with this problem. Anyone?