Market regulator Sebi relaunched futures trading in castorseed which was suspended in January last year.
Marketmen said speculative positions created by participants, taking positive cues from the physical markets mainly attributed the rise in castorseed prices at futures trade.
In futures trading, at the National Commodity and Derivatives Exchange, castorseed for delivery in February hardened by Rs 35, or 0.87 per cent, to Rs 4,075 per quintal, with an open interest of 7,010 lots.
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