price discovery

When one entity holds the majority of any stock traded, the temptation to game the system by moving prices would be (and is) impossible to contain.
Commodities traders who buy and sell as much as $5.67 trillion of raw materials a year say the benchmark prices for everything from oil to iron ore to gasoline are wrong as often as 27 percent of the time.
It's interesting how people become accustomed to pricing. When we go to a retail store here in the United States of America, we accept the price that is posted for the product as the final price in most cases.