I think I may have posted this by accident as a reply to a random thread as I can't find my post in the topic's thread list (sorry, I'm new here). I will rephrase my original question: I'm using NT and IB, I believe NT can download historical data on second and above timeframes automatically from IB which is nice. I originally set out to build tick data on all the majors but noticed that a lot of people here are working off more medium-frequency timeframes. What are some of the commonly traded timeframes people are trading FX and futures off? I have heard 1min, 5sec, 5 minute and daily. For those that are trading on these timeframes: 1. Are your indicators/strategies operating solely off the end of bar? I would imagine when back testing that is all you have. 2. Are you signals generated intrabar or only at the bar-close? 3. For those that are using NT, are you using bid, ask or last trade historical data? Thank you for your kind responses and I apologize again if I somehow duplicated the thread. -Chris