Market analysts said speculators built up fresh positions due to pick up in demand in the spot market against restricted supplies from growing regions, mainly led to the rise in refined soya oil prices at futures trade.
At the National Commodity and Derivatives Exchange, refined soya oil for delivery in far-month October rose by Rs 2.15, or 0.38 per cent to Rs 571.70 per 10 kg with an open interest of 42,275 lots.