You're not. Market makers really like filling orders for small-time investors because it's really unlikely that a small-time investor knows more then the market

You're not. Market makers really like filling orders for small-time investors because it's really unlikely that a small-time investor knows more then the market maker. They don't like filling orders for big institutional investors because those guys might know more than the market makers, and the market makers might accidentally give them too good of a deal.