Originally Posted by
Siriusowner
All stock market transactions have 2 sides, a buyer and a seller, HOWEVER; only one side is either actually buying or selling, YOU or ME ... the other side, eventhough is also "buying" or "selling", is just acting as an intermediary. He is called a MARKET MAKER.
What is a market maker ? well, it is your broker, a different brokerage firm, a bank or any other financial institution that has a brokerage arm.
You see, when you buy your shares, you buy them from a market maker. He/She has an inventory of issues he holds temporarly and he sells them to whoever wants to buy BUT he also buys them from whoever wants to sell. He tries to balance the market by adjusting the price of his issues according to the market sentiment. If there are to many buyers what do you think will happen ? his inventory will go down and he may start running short of a specific issue, so what do you think he will do with its price ? he will increase it to dis-encourage buying. That is why if there are too many buyers, the price of an issue goes up. Exactly the opposite happens when there are too many sellers. It is the law of supply and demand.
Try this simple excersise: Try to buy 1000 shares of SIRI whenever its price is going down (too many sellers). i.e: if the price right now is .11, put a limit order to buy at .12 (It will not get filled at .12). Can you figure out what happened ?
Now, place several 1000 share orders with limits from .12 thru .20.
Do the same but this time sell them.
It is called, price manipulation...and you can do it with 100 shares only.