After searching on this topic and found nothing I thought i might start a theard discussing how broker's order (at least in the pit) affect the direction of the market. I heard guys on the floor says sometimes as the market rally the deck of cards on the buy side gets thicker and thicker. Can someone who have spent time on the floor (either a pit trader or pit broker) explain how reliable as an indicator of paper's limit order on the market's direction? Is it really that visible of the whole supply demand picture just by looking at the resting orders in the book? Of course, on the screen the limit orders are all bs. But, does the pit's resting orders give a good picture? And lastly, how do you use the info that you see with those orders?