The term automated order system refers to a computerized network that transmits instructions to the designated order turnaround system or to floor brokers working on the exchange. The automated order system routes the trader's instructions so they can be quickly executed.
Explanation
The Automated Order System, or AOS, is a computer program that automatically routes orders to the designated order system, in the case of odd lot orders, or directly to brokers working on the floor of an exchange.
Automated trading systems like AOS have the capacity to execute orders with both speed and accuracy. By removing human intervention in this phase of the order-handling process, these systems can lower the number of errors. Finally, they're also able to provide another layer of security against fraud, thereby helping to control risk too.
The term high-frequency trading refers to computerized platforms with the capacity to execute a large number of transactions in a relatively short timeframe. High-frequency trading is limited to those institutions with direct feed lines to an exchange.
The term super display book refers to a computerized system used by the NYSE to display, record, and execute orders for securities. The super display book routes orders directly to the correct specialist for immediate execution.
The term quote stuffing refers to the practice of placing and canceling a relatively high number of orders for a security in an attempt to manipulate the market. High-frequency trading programs, and direct links to the exchange, make this tactic possible.
The term mixed lot refers to an order that contains a combination of both round and odd lot orders. A mixed lot for stock is any order that is greater than 100 shares, but not a multiple of 100 shares.
The term designated order turnaround system refers to a computerized network that routes instructions to exchange specialists, thereby bypassing brokers. The designated order turnaround system quickly executes orders to both buy and sell relatively large baskets of stock.