You realize of course that MM's have nothing to do with share price. They fill orders and collect a cut. It is SELLERS that drop the price. Idiots that sell at market will drop it every time.
If traders always sold at limits, that wouldn't happen.
MM's clearly post what they will pay for shares, and what they will sell them for. If you offer to buy or sell within that range, it will happen. If you buy or sell at market, you will get something, but you won't know what it is until it's done. THAT is where the MM's clean up - you are SAYING I will buy them for any price, or I will take any price for my shares. They change their spread instantly to do a market order.
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