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Dark Sweep

This strategy seeks liquidity in dark pools with a combination of probe and resting orders in an attempt to minimize market impact. Works child orders at better of limit price or current market price. Prioritizes venue by probability of fill.

Field Name


Valid Values/ Default Value

Effective Time

Optional. Set the time to begin the order.

Between market open and market close, and prior to Expire Time (if set).

Defaults to immediately.

Expire Time

Optional. Time/date for the order to expire.

Between market open and market close, and after Effective Time (if set).

Defaults to market close if not set.

Dollar Certain Limit

Optional. The maximum acceptable dollar amount of the trade, including Dollar Certain Commission. Used to trade by dollar amount.


Dollar Certain Commission

Optional. The commission cost on a cents-per-share basis, e.g. 0.1 = 1 cent


Dollar Certain Execution checkbox

Optional. Check to determine the order quantity by dollar value. Must be checked for other "Dollar Certain" fields to be valid.

If checked, Dollar Certain Limit at least must be defined.

Important Disclosures