At National Commodity and Derivatives Exchange, refined soya oil for delivery in October moved down by Rs 4.80, or 0.83 per cent to Rs 571 per 10 kg with an open interest of 65,270 lots.
Similarly, the oil for delivery in November declined by Rs 4.70, or 0.82 per cent to Rs 569.20 per 10 kg in 47,455 lots.
Analysts said besides profit booking by participants at existing levels, fall in demand in the spot market against sufficient stocks position kept pressure on refined soya oil prices at futures trade.