At the National Commodity and Derivatives Exchange, castorseed for delivery in February 2015 contracts shot up by Rs 126, or 2.76 per cent, to Rs 4,685 per quintal, with an open interest of 65,370 lots.
Also, most-active delivery this month contracts improved by Rs 16, or 0.33 per cent, to Rs 4,820 per quintal in an open interest of 3,38,060 lots.
Marketmen said speculative positions built-up by participants on the back of lower production estimates, mainly pushed up the castorseed prices in futuers trade.