| 摘要 |
Trading of multi-leg strategies is facilitated by a computerized system and method that enables a trader to efficiently define and trade a multi-leg instrument while minimizing leg risk. The multi-leg instrument may be defined to include one or more execution triggers, such as contingencies that delay submittal of trade orders for contingent leg instruments until the contingencies are met, and dynamic re-pricing that re-prices the leg instruments when a market update is received. The precise method of execution will vary according to how the multi-leg instrument is configured. Trade orders for contingent legs (including contingent legs configured for dynamic re-pricing) are held in abeyance until all contingencies have been met. Trade orders for non-contingent dynamically re-priced legs are submitted immediately at a leg price and leg quantity. Trade orders for non-contingent, non-dynamically re-priced legs are submitted to an exchange when the market crosses the multi-leg instrument (i.e., when current market data reflects that all legs of the multi-leg instrument is available for acquisition at the leg price and leg quantity). For any leg which is not fully filled after an initial trade order for that leg is submitted, a subsequent trade order will be sent for the remaining leg quantity at a leg price that is determined based on the fill price of all fully and partially filled legs.
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