Notes on Combination Orders
Instructions
This page contains notes and tips on creating and transmitting combination orders.
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Use SmartRouting to execute legs separately to ensure you get the best price on all legs of your order.
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Some exchanges that currently support native combination orders (which means they execute the legs together as one transaction) include:
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ISE
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ONE
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DTB (Euro)
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Note on pricing: If you buy a spread and you owe cash (debit spread), enter a positive limit price. If you buy a spread and you receive cash (a credit spread), you must enter a negative limit price. Conversely, if you sell a spread and receive cash, enter a positive limit price. If you sell a spread and owe cash, you must enter a negative limit price.
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For example, an April 20.0 xyz call shows a BID price of 6.60 and an ASK price of 6.70. An April 30 xyz call shows a BID price of 0.15 and an ASK price of 0.20.
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If you buy a "debit" call vertical spread with the following legs:
Buy 1 OPT APR02 20.0 CALL (6.70),
Sell 1 OPT APR02 30.0 CALL (0.15)
For this transaction you pay: 6.55 (a debit transaction)
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If you invert the legs and buy a "credit" call vertical spread with the following legs:
Sell 1 OPT APR02 20.0 CALL (6.60)
Buy 1 OPT APR02 30.0 CALL (0.20)
For this transaction you receive 6.40 (a credit transaction, enter a negative price)
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Before you transmit a combination order, carefully review the order parameters from the Order Management line.