They'll be routed to whoever is paying them the most for the flow.
https://www.tdameritrade.com/retail-en_us/resources/pdf/AMTD2054.pdf
Information concerning significant venues:
Cboe BZX Options – TD Ameritrade Clearing receives payment from Citadel Execution Services, Citi Global Markets, Dash Financial, Global Execution Brokers, Morgan Stanley, and Wolverine Execution Services for directing equity and index options order flow to this venue. Payments received averaged $0.51 per contract for order flow executed in the fourth quarter 2019.
Nasdaq PHLX – TD Ameritrade Clearing receives payment from Citadel Execution Services, Citi Global Markets, Dash Financial, Global Execution Brokers, Morgan Stanley, and Wolverine Execution Services for directing equity and index options order flow to this venue. Payments received averaged $0.51 per contract for order flow executed in the fourth quarter 2019.
NYSE Arca Options – TD Ameritrade Clearing receives payment from Citadel Execution Services, Citi Global Markets, Dash Financial, Global Execution Brokers, Morgan Stanley, and Wolverine Execution Services for directing equity and index options order flow to this venue. Payments received averaged $0.51 per contract for order flow executed in the fourth quarter 2019.
Cboe Options – TD Ameritrade Clearing receives payment from Citadel Execution Services, Citi Global Markets, Dash Financial, Global Execution Brokers, Morgan Stanley, and Wolverine Execution Services for directing equity and index options order flow to this venue. Payments received averaged $0.51 per contract for order flow executed in the fourth quarter 2019.
Nasdaq Options Market – TD Ameritrade Clearing receives payment from Citadel Execution Services, Citi Global Markets, Dash Financial, Global Execution Brokers, Morgan Stanley, and Wolverine Execution Services for directing equity and index options order flow to this venue. Payments received averaged $0.51 per contract for order flow executed in the fourth quarter 2019.
Cboe EDGX Options – TD Ameritrade Clearing receives payment from Citadel Execution Services, Citi Global Markets, Dash Financial, Global Execution Brokers, Morgan Stanley, and Wolverine Execution Services for directing equity and index options order flow to this venue. Payments received averaged $0.51 per contract for order flow executed in the fourth quarter 2019.
MIAX PEARL – TD Ameritrade Clearing receives payment from Citadel Execution Services, Citi Global Markets, Dash Financial, Global Execution Brokers, Morgan Stanley, and Wolverine Execution Services for directing equity and index options order flow to this venue. Payments received averaged $0.51 per contract for order flow executed in the fourth quarter 2019.
Nasdaq GEMX – TD Ameritrade Clearing receives payment from Citadel Execution Services, Citi Global Markets, Dash Financial, Global Execution Brokers, Morgan Stanley, and Wolverine Execution Services for directing equity and index options order flow to this venue. Payments received averaged $0.51 per contract for order flow executed in the fourth quarter 2019.
Nasdaq ISE – TD Ameritrade Clearing receives payment from Citadel Execution Services, Citi Global Markets, Dash Financial, Global Execution Brokers, Morgan Stanley, and Wolverine Execution Services for directing equity and index options order flow to this venue. Payments received averaged $0.51 per contract for order flow executed in the fourth quarter 2019.
Rule 606 exempts broker-dealers from identifying execution venues that received less than 5% of non-directed o