Auction Orders

An auction order is entered into the electronic trading system during the pre-market opening period for execution at the Calculated Opening Price (COP). If your order is not filled on the open, the order is re-submitted as a limit order with the limit price set to the COP or the best bid/ask after the market opens.


The Reference Table to the upper right provides a general summary of the order type characteristics. The checked features are applicable in some combination, but do not necessarily work in conjunction with all other checked features. For example, if Options and Stocks, US and Non-US, and Smart and Directed are all checked, it does not follow that all US and Non-US Smart and direct-routed stocks support the order type. It may be the case that only Smart-routed US Stocks, direct-routed Non-US stocks and Smart-routed US Options are supported.

Products Availability Routing TWS
Futures Pre market trades US Products Pre market trades Smart Pre market trades Attribute Pre market trades
Stocks Pre market trades Non-US Products Pre market trades Directed Pre market trades Order Type Pre market trades
Time in Force
Only Supported on Limited Exchanges.
View Supported Exchanges|Open Users' Guide


Auction Orders example for pre market trades

You want to buy 10 XYZ futures contracts as an auction order at the calculated opening price, which you think will be the best price of the day. Create a buy order row, and selected MTL as the Type and AUC as the time in force. The market to limit order type with the AUC time in force define your order as an auction order. The order will be converted to a limit order at the Calculated Opening Price if it is not filled during the pre-market opening period.

The risk of loss in online trading of stocks, options, futures, currencies, foreign equities, and fixed income can be substantial. Options are not suitable for all investors. For more information, read the "Characteristics and Risks of Standardized Options".

Your capital is at risk and your losses may exceed the value of your original investment.

Interactive Brokers (U.K.) Limited is authorised and regulated by the Financial Conduct Authority. FCA Reference Number 208159.

Interactive Brokers LLC is regulated by the US SEC and CFTC and is a member of the SIPC ( compensation scheme;
products are only covered by the UK FSCS in limited circumstances.

Before trading, customers must read the relevant risk disclosure statements on our Warnings and Disclaimers page.

For a list of IBG memberships worldwide, see our exchange listings.