Quote from frostengine:
I have purchased and saved historical data over the years. Been building these systems since 2004. I essentially have 10 years of future data on nearly every US based future contract
Got it. I've been doing more or less the same thing (been at it since 2000). IQFeed goes back to 2007 on stocks, 2005 on futures. PiiTrading goes back to 1999 on futures, 2003 on stocks, so between those two I can patch together 8 to 12 years of intraday data.
IQFeed also offers 3mos of tick data and I've been collecting it for over a year on ES, NQ, 6E, etc.
Good luck today - look forward to checking out your results!