Michelle: A couple of quick things. First, you should have explicit keep= lists on you data sets (eg DATA sasdata.daily (keep=ticker bido asko...) )otherwise each of the datasets ends up with variables that do not belong. Second, you use trailing @@ on some of your inputs. This tells sas to 'hold onto this line across the data step loops'. Since you explicitly give a line length, I assume each instance of each record (except the header)is on a different line so both (and possibly neither) of the trailing @@ are required

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