Introduction to the Interactive Brokers’ Alternative Trading System (ATS)

Learn about the benefits of sending large blocks of orders to IBKR’s internal alternative trading system – the IBKRATS. Our system is designed to enable your order to interact with other client orders away from public view. Learn about the available order types and how to find IBKRATS as a routing destination when creating orders.

The IBKR ATS Pegged-to-Best order type is available for US stocks. It is useful for investors to direct non markable or liquidity providing orders to the IBKR ATS that compete with the near side NBBO.

The IBKR ATS Pegged-to-Midpoint order type is useful if the investor wishes to rest a nonmarketable order at the midpoint of the NBBO. It is also available for US stocks in the IBKR ATS.