At the National Commodity and Derivative Exchange, guar gum delivery for the most-active October month spurted by Rs 125, or 1.63 per cent, to Rs 7,797 per quintal, with an open interest of 38,890 lots.
The November month contract also gained Rs 125 or 1.61 per cent to Rs 7,910 per quintal, having an open interest of 15,595 lots.
Analysts said participants raised bets after a firm trend trend at domestic spot markets on the back of strong export demand.
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