Parallel Posting- Customers may have their orders that are unfilled or partially filled by PDQ's LPs posted simultaneously at multiple dark pools (and/or exchanges). Orders are intelligently divided and sent to rest in the dark. After orders are filled down to a certain level the shares outstanding are re-balanced, boosting the percentage of the order resting at the dark pools filling the order.

Memory Based Dark Routing Customers can have their orders that are unfilled or partially filled by PDQ's LPs routed directly to the dark pools recently providing executions for the symbol and side of the order. Time is not wasted routing to dark pools not active in the symbol and side in the recent past time interval.

Limit Order - Marketable limit order that can generate and discover liquidity and price improvement at PDQ.

Market Order - This order is the same as the commonly known type and can be improved by PDQ just like a Limit Order.

Immediate or Cancel at PDQ - A liquidity seeking order whose unmatched residual will be cancelled if not matched at PDQ within 20 milliseconds.

Managed Algorithm - A liquidity seeking order that will reside at PDQ and interact with other liquidity seeking flow as a Liquidity Provider.