Today’s grain and soy futures markets were a sharp contrast to Monday’s with a substantially lower volume of trade. Interestingly, open interest (O/I) in corn jumped almost 40,000 contracts yesterday. Funds were heavy sellers, adding to their already very large short position. However, the big increase in O/I suggests that new long positions were being established, probably by end users who apparently saw yesterday’s break to near last month’s lows as an opportunity. O/I in soybeans also climbed nearly 14,000 contracts as funds added to their short position in that as well. Some of the increased O/I could also be the result of index fund rebalancing, during which some volume of wheat, corn and soybeans was purchased...