At the close order

At the close order

In the context of securities, an all or none market order that is to be executed at the closing price of the security on the exchange. If the execution cannot be made under this condition, the order is to be treated as cancelled.

In the context of futures and options, refers to a contract that is to be executed on some exchanges during the closing period, a period in which there is a range of prices.

At the Close Order

1. An order to buy or sell a security at the best price available when an exchange closes.

2. An order to buy or sell a security at the security's price when an exchange closes. If this price is not available, the order is canceled.