Is it possible for any orders to be filled outside of the bid-ask spread? Meaning can i sell something for 60 if the bid-ask is 54-55? Is it possible to buy just above the bid and sell just below the ask for an easy flip? When I place an order does it always go through a market maker or only sometimes? If some sort of catastrophe occurs causing the price to crash, does the bid-ask spread widen significantly? Do market makers/specialists ever manipulate the price, or is it completely legit? When the price moves, is this a manual adjustment made by the market maker to find equilibrium? Who determines the opening price and how? Isn't this a super easy way to screw with the market for their own gain?