Monthly Summary May Activity Down, Open Interest at End Of Month Points to Reset Collectively, the eight leading agricultural futures contracts on the Dalian Exchange saw their monthly trading and volume fall by just under 16 percent and 12 percent, respectively in May. Note, there is a contract for polished round-grain rice that was launched last summer, but its trading activity remains quite small. Even with the decrease, the total volume and turnover through the first five months of the year show just how much agricultural commodities, and specifically those futures associated with food related products and inputs, have been key performers. Together, the leading eight agricultural contracts accounted for half of the volume traded on t...