The IBKR SmartRouting system is designed to achieve best execution on client orders, by selecting the execution venue that will offer the best price or best total consideration for clients (depending on the client’s preference and instrument traded). All client orders that are subject to SmartRouting (in both whole shares and fractional shares) are only be routed to the IB SI when doing so would result in the client receiving or paying a total consideration that is equal to (or better than), the total consideration at the European trading venues that IBIE has access to.