I am trying to back test a system and I need to see historical "intra day highs and lows" data for stocks. For example, at Hold , we use a software called "analytics" which streams intra day highs and lows, but I cant see the history. Is there any other software out there that can show history? After the market closes, I want to go through the highs and lows in the order that it occurred. The more day's data available, the better. Thanks in advance