Yes, I took liquidity. Should that matter with IB's commision structure?Did you take liquidity? Did you trade a product with extra CBOE fees?
But just take a look at the second screenshot above... I was thinking that is the default for me since they advertise this plan, and only this plan is given for the US at their website.I think the fix plan is only for equities and futures, options don't have a fix plan at IB. I could be wrong.