And it says right there in your link - minimum $3 charge on equities. Now suppose I buy 300 shares and wish to sell them incrementally (take partial profits), 100 shares at a time, at different price levels. With MBT that will cost me $12. With IB it will cost me half that ($6). As for eminis, $3.25 per contract is much higher than $2.4 per contract (current IB commissions). It says so in the link that you yourself posted. Maybe you are the one who should do the research... And by the way if an expensive broker like MBT is lowering commissions too, it only adds to my point that IB must wake up and burry this mounting competition! IB show them who's boss!