Under Rule 11Ac1-6 as adopted, broker-dealers that route orders on behalf of customers are required to prepare quarterly reports that disclose the identity of the venues to which orders are routed for execution. The reports also disclose the nature of the broker-dealer's relationship with those venues, including the existence of any internalization or payment for order flow arrangements. Finally, broker-dealers are required to disclose, on customer request, where they routed a customer's individual orders for execution.