NYSE big bid/ask blocks

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
 
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