I know this is kind of an odd question, but I use thinkorswim from ameritrade. On my thinkorswim charts the stock shows a completely different high/low/open/close than on the prophet charts in the desktop application for the date 12/7/2009. (other dates for this stock shows differences but just using this date as an example). I looked at barchart.com and it seems to go by prophetcharts data, but finance.google.com goes towards thinkorswims data. Why is there so many differences for this date on this stock? Also other dates in december are way off but like I said just using this as an example. Thanks for the help!