Cboe EDGX Equities Updates Maximum Open Orders Limit

Effective October 9, 2026, Cboe EDGX Equities Exchange (EDGX) will update the exchange-wide maximum open orders limit from 300,000 to 600,000 per FIX/BOE/BOEv3 order entry port.

To opt-in to this increased limit, customers can use Logical Port Request form in the Cboe Customer Web Portal and note in the free text field that the port maximum open order limit should be 600,000. The default value will be 300,000.

If a port maximum open order limit greater than 300,000 is enabled, the Cancel on Disconnect port attribute will automatically be disabled.

This functionality is currently available to test in the EDGX certification environment.