Is there any substance and proof to this assertion? What makes you think you know that the market makers at IB had access to client flow? Not saying it's impossible but highly unlikely. Plus it's quite a difference between a broker that handles on boarding professionally and ethically within the regulatory framework VS a broker who already from the get go makes shady statements and talks shit. What a market maker does is one thing but you can't blame the account opening client facing guy for it. Which other broker than IB let prospects take an industry knowledge exam before even considering them customers? No matter how hard I look I can't see parallels between IB and many of the other shady broker outlets. Nobody is perfect but what matters is general conduct across a large number of observations.
That is why they had separate MM division in the past, to get around those regulations
The MM used to take other side of the Brokerage Division's losing traders but front run the winning traders, not to mention taking the other side of the Auto Liquidator
![]()

, not to mention taking the other side of the Auto Liquidator