Back test data

[golfone]

What are good sources for accurate back test data to 5 years?

[Fernando Carreiro]

golfone: What are good sources for accurate back test data to 5 years?

For special needs on MT4 I use Dukascopy historical tick data (with TickStory 3rd party tool), that can go back more than 10 years for most symbols.

However, most of the time I just convert my brokers data on MT5 into MT4 formats (".hst" & ".fxt"), so that I can back-test my code both in MQL4 and MQL5 with the same data in order to make sure that my code works exactly the same on both platforms.