Every market participant wants to buy low and sell high. They are all manipulators in some sense. Dedicated manipulators exist, but really they are just part

Every market participant wants to buy low and sell high. They are all manipulators in some sense. Dedicated manipulators exist, but really they are just part of the market and assist in price discovery. Deep markets generally defeat the type of manipulation that worries people. Multiple competing exchanges keep the exchanges honest.