Futures contracts of soybean on the NCDEX were down, as investors booked profits after prices hit a four-month high of 3,027 rupees per 100 kg in early trade. The most active August contract of soybean on the NCDEX was down 0.5% from the previous close. A 1,030-tonne decline in open interest at 69,500 tonne in the contract indicated profit booking.