You have your own agenda and don't work or know about them - interesting for you to comment without doing more research as a licensed person. They do
I listened to the Goldman presentation where it is discussed (I found the presentation very interesting). Also on the presentation
Investor Presentation a slide says:
"IB achieves the industry's best price improvement because we do not sell client order flow"
On another slide it says "we do NOT sell order flow to internalizers"
Then in the 606 report linked above it says:
1. IB's Order Routing System: IB does not sell its order flow to another broker to handle and route. Instead, IB has built a real-time, high-speed Best Execution Order Routing System (SmartRoutingSM), which is designed to optimize execution price, speed and total cost of execution for stocks and options. IB constantly changes and enhances the SmartRouting system to adapt to changes in markets, new exchanges, new trading rules, etc. IB's SmartRouting system continually scans competing market centers and automatically seeks to route orders to the best market, taking into account factors such as quote size, quote price, exchange or ATS transaction fees or rebates and the availability of price improvement (execution at a better price than the National Best Bid or Offer (NBBO). The IB SmartRouting system continually reevaluates market conditions and prices for pending IB customer orders and dynamically re- routes orders as necessary.
For some products, IB customers may directly route their orders to a particular market of their choice, although IB recommends that our customers use the IB SmartRouting system.
IB also operates an Alternative Trading System (ATS) in accordance with SEC Regulation ATS, on which it executes IB customer trades against each other or against one or more professional liquidity providers who send orders into the IB ATS. Order executions on IB’s ATS are faster, eliminate exchange fees and may offer price improvement compared to the NBBO. Statistical information regarding the quality of executions for orders effected through IB’s ATS (e.g., average execution speed, percentage of orders receiving price improvement, etc.) are available on the IB website at
www.interactivebrokers.com or may be downloaded at:
Comagnum: sending orders to a dark pool doesn't mean internalize as there are multiple liquidity providers in the pools. The 606 does say clients receive roughly 50% of any commissions or commission equivalents from the liquidity providers.
But back to Bob and the statement that they do not sell flow: from the 606:
D. Options: Interactive Brokers does not sell its option orders to another broker to handle and route. Rather, IB employs its SmartRouting system to try to achieve the best execution for customer option orders. The IB SmartRouting system attempts to achieve an execution price at NBBO or better than the NBBO by utilizing relationships with affiliates and other liquidity providers, who may provide price improvement through the various auction and price improvement mechanisms offered under U.S. option exchange rules.