Home › Forums › General Discussion › Data and OOS% This topic has 1 reply, 1 voice, and was last updated 4 years, 8 months ago by Anonymous. Viewing 1 reply thread Author Posts January 31, 2020 at 19:03 #36399 AnonymousInactive Hello, how many years of data are you using to develop your strategies and what %OOS? January 31, 2020 at 20:26 #36403 AnonymousInactive Hello, I personally stick to 200 000k bars on M1 and M5, and with the rest, as much as possible, but not longer than 3 years. I really do not want to base my strategy on data from 5-10 years back. Regarding the OOS, I use 10 or 20%. This feature is number 1 in EA Studio :) Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Please enable JavaScript to submit this form. Log In