at-the-close order

At-The-Close Order

An order specifying that a trade is to be executed at the close of the market, or as near to the closing price as possible.

Notes:

It's essentially a market order that doesn't get entered until the last minute (or thereabouts) of trading. With this type of order you are not necessarily guaranteed the closing price but usually something very similar.

See also: At-The-Opening Order, Limit Order, Market Order

---

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.