The attached Pair Trade can be used to hedge one contract against another, generally in the same industry. Offset a price discrepancy between the two contracts with a ratio.
To attach a Pair Trade
Hold your mouse over the Pair icon to see the calculated estimated quantity of the hedging contract based on the entered ratio. For example, if the parent order quantity is 500 and you enter a Hedge Ratio of 2, the estimated quantity of the hedge order will 1000, i.e. a 2:1 ratio.