What the hell? I recently started using eSignal for RT data. I have an ongoing subscription to Norgate's Premium data for EOD data. I have been happy with Norgate data, as it interfaces seamlessly with my charting s/w. Today I was looking at MSFT. For some reason I had both eSignal and Premium data charts up. Check this out Here's a chart from Premium data http://i219.photobucket.com/albums/cc132/tradernik/PremiumchartforMSFT.jpg Here's the eSignal chart http://i219.photobucket.com/albums/cc132/tradernik/eSignalchartforMSFT.jpg (Please note that today's trading is not shown on the Premium data chart). I mean, I can understand a few ticks difference. But these charts are not even close. There are bars that bear no resemblance to each other. I checked daily volumes and they vary wildly. I checked a couple of free charting sites and both of them looked a lot like the Premium Data chart. Can someone help me out and tell me what I am looking at here? Does anyone have CQG or comparable upper tier feed with which to compare these? Why these huge differences? I looked at a bunch of other charts and they are all different. Is eSignal taking the pre and after market into account? Even if this is the case, it would not account for the differences I am seeing (I don't think it would, anyway). The differences in some of these bars would clearly mean the difference between an Amibroker signal being generated or not.