Gur prices drifted by Rs 4.80 to Rs 939.20 per 40 kg in future trade today, on frequent selling against heavy supply in physical markets.
Trade analysts said arrivals of new stocks into the markets created adequate position and pulled down the prices.
Reports of better-then-expected sugar-cane crop this year further influenced the market sentiment, they said.
At the National Commodity and Derivatives Exchange, gur for current December month contract went down by Rs 4.80 or 0.51 per cent to Rs 939.20 per 40 kg, with an open interest of 16,060 lots.
Near January month contract also lost Rs 4.80 or 0.50 per cent to Rs 963 per 40 kg, showing an open interest of 13,240 lots.