Quote from john99:
alorainc,
That makes it sound like the market revolves around 1 large farmer who is only selling 1 product. Your example would sound better if we said there are hundreds of large farmers all wanting to sell their product at a better price relative to where they bought it, hence open auction price movement. If you use volume based market profiling and software tools like marketdelta, you can see where the majority of the large farmers have accumulated positions. This information is useful on the longer time frame.
For scalping done in seconds, the edge comes from being able to sell on the ask and buy on the bid. If you are a retail trader, don't expect to be able to buy the bid and sell the ask in less then 5 seconds when you only trade 5 contracts on ES. I'm sure everyone has watched the time and sales and seen for example 226 contracts print on the bid and then 2 seconds later the next print is 226 contracts at the ask and then you see the price is back at the bid. What just happened? Was that 1 trader that just scalped a tick or was the 2 traders, 1 that lost a tick and 1 that gained a tick holding 226 contracts? How many retail traders do you know that trade over 100 contracts per trade and at the same time don't lease a seat with CME? Ask yourself, who are the guys that get fills on the bid when the price is on the ask?