at-the-close order

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.

at-the-close order

A specialized order to a broker in which the customer specifies that execution take place at the closing price of the day. In practice, execution is permitted during the 30-to-60-second period before the closing bell.