does the historical data you get from your H.D. provider give you globex overnight data as well as volume information for those Time and Sales Prints?
you better listen to squak box which gives tick-by-tick info so that why to worry for historical data? i don't care if you have data since stone age. who cares, what use of it....
you know that if one can do a back test on a theory using historical data and if the results are highly profitable it would then support the idea of putting more time and money into that theory and hopefully the results would continue to be highly profitable
https://equotes.cme.com/wlcs/application/commercewf?origin=main.jsp&event=link(historicaldata) not sure what you're looking for. You probably already checked the merc. previous day is free, historical costs