So -- I have my own ideas about how to interpret large bid and ask blocks when I am watching an NYSE intraday. I was hoping that some of you could contribute some additional knowledge... I call those big blocks sheep herders. When you see a big block you have two choices: 1) front-run it. or 2) assume the specialist is just holding the market at a price and ignore it. I have seen case 2 unfold in a number of ways... a few examples: Sometimes the big block appears and disappears and reappears over and over - giving pressure in one direction. Sometimes the big block holds the market off -- prices reverse and then another appears in the opposite direction. Sometimes the big block gets blown out (you see it disappear and a similar sized block(s) on T&S) Sometimes it appears to get blown out and reappears. Sometimes it just goes away. I keep a monitor of bid/ask blocks over a certain size which are color coded and I've noticed there will typically be a dominant color for the day. This color may or may not jibe with the prevailing price direction for the day. So -- has anyone noticed a tendency or predictive pattern with respect to these big blocks? or have a certain philosophy on these sheep herders? Thanks in advance J