One final note on openings - when an institution is buying or selling a stock the trader does not give the whole order to the Specialist on the opening. If I had to sell 300,000 shares of ANN, I would only give 25,000 - 50,000 shares depending on how big the opening print was going to be, just to test the water. Then I would see which way the stock was trending, and act accordingly. Nobody is going to show his hand, and it is very rare for an institution to buy/sell their whole order on the opening print. The Specialist is very much aware of this fact, and that is why he is not always a part of the larger prints that go up later in the day. If I continuously feed 25,000 shares of ANN to the Specialist without telling him my size, do you think he will take a chance and buy any significant amount of stock at any time during the day just because the stock is lower? No, he'll keep asking the floor broker who keeps giving him the order if there's more behind it. It could take days. But when the order is finished, most traders won't care about letting the specialist know, and now he'll participate on the clean up print.
So how does this apply to "reading" the Specialist? It keeps the focus on what we really want to know: how the Specialist handles larger orders, not how the Specialist makes money for himself. The Specialist will always make money and unfortunately we can't use the same methods for ourselves. For those of you excited about the possibility of 'Open Book' on the NYSE forget it. Do you really think that an institution would give the Specialist a 200,000 share sell order if the whole world could see it? Or even 50,000 shares? No, the orders will just get smaller that's all.
So actually we're not looking for much, just a typical pattern that the Specialist continues to exhibit when working a large order. Lets say the Specialist in ANN receives an order to buy 50,000 shares at the market, and he doesn't have a natural seller. What is his normal process? Well, if you knew beforehand that he had this order, and then watched what happened it would be easier to see, but unfortunately you'll have to work backwards and try to figure things out which will certainly take much more time. How does he start? Usually he'll start by flashing a decent bid of about 5,000 shares. It's a strong bid, but not enough to scare anyone away. If he gets some nibbles, he might up the ante and show 10,000 shares. As a daytrader, we get excited when we see this, but we need to think like an institution. If I was an institutional seller of ANN, I'd be more likely to react to a real bid than a tiny bid. That's what the Specialist is looking for. But if he can't lure one in, he'll have to just pick away, which means buying at the offers (Not many small orders will feel the need to sell 500 shares into such a strong bid). So the stock moves up slightly as different offers are taken, but how does the Specialist handle this? If he's accumulated 5,000 shares already does he sit tight with a 5,000 share bid at the original level? Does he replace with bid with a higher 2,000 share bid? Does he remove the bid altogether to make it seem like there's no support? You may have been watching the stock for the last hour, but will every trader catch that? Making the stock look weak is a common strategy. Instead of dropping the bid, it's actually more effective sometimes to show a weak bid, of say one or two hundred shares, as well as a strong offer one cent above it making it look like the stock is ready to fall. Not a bad way to attract sellers. Does the Specialist in your stock do this? How many times? What happened when sellers took out the weak bid? Where was the next bid? Where was stock being printed? Was it 5 cents below the weak bid? 10 cents? Some specialists will use the same amount every time. And unless the stock has just run up a lot already, he won't let the stock fall too much - remember his primary goal is to fill the order, not to get too cute about it's execution. He's still got more stock to buy, so he'll take all those panic sell orders and execute them at the same price. Eventually if there's no supply, the stock will move up. Does the Specialist use another 5,000 share bid, but up higher? Kind of obvious, huh? How about 3,400 shares - looks more like a stray order. Another 10,000 shares accumulated, time for the old 'weak bid' trick again. You get the point. The key is watching, and I mean really paying attention to what is going on so that you can get a good idea of the behavior of the Specialist when he has a large buyer and no sellers (or vice-versa). This could take an extremely long time, but could be well worth the effort.
One last thing - some Specialists trade more than one stock (not the really big ones), and at times, their attention may be drawn to another situation. Sometimes they are out sick or on vacation (or out to lunch). Sometimes an institutional trader will tell them exactly what they want them to do as far as showing bids/offers that may make no sense to us watching the stock. It happens, and there's nothing we can do to change that. Just try to stick with what usually happens, not what happened last.