Markets on this last trading day of 2015 acted very much as they have for quite a while. Noncommercial traders are carrying large short positions in wheat and corn futures into 2016 along with the risk that something will occur to force a short covering rally. General Comments Grain and soy markets are closed Friday, New Year’s Day and will reopen Sunday evening.Markets on this last trading day of 2015 acted very much as they have for quite a while. Quiet overnight trading saw prices struggling to work higher, followed by a day session in which they slowly sagged lower. Many managed funds and other traders had already closed their books on the year, and this subtracted from already slack trading volume. Markets have been starved for somet...