The following is an excerpt from printed manual enclosed with video course How to Scalp Any Market devoted to scalping the NASDAQ equities. I'll break it down in parts for readability. Hope it helps.
6.3 Market Participant Behavioral Patterns
Given all that is said above about Level 2, itâs time to discuss Level 2 reading in the perspective of using it as directional tool. Again, as with size, this factor is not something that could be used easily nor as a stand alone primary method of reading. The role of this approach is not as great as it used to be before SuperSOES and decimalization. Still, there are times when recognizable patterns of market participants appear and can be utilized. Itâs particularly true for thinner issues, as stocks with high liquidity rarely if ever allow for any reliable Level 2 reading.
Before we continue, a reader should be warned: itâs not easy to tell when these methods are applicable and when there is no real pattern. It wasnât easy even before 2001 and was never an exact science. Many books tried to describe how to read market maker intentions by their level 2 movements. Yet, it will always remain an art to a certain degree, and only experience and daily observations will allow a trader to fully master it. It became even harder with all the technological innovations of recent years. We discuss these patterns here to give a reader a more complete understanding of Level 2, and to give some guidelines to those devoted individuals who want to increase their use of this tool. In my personal trading this approach is used sometimes as a supplementary method when the obvious pattern appears.
1. Using hidden size to fill a big order
As we discussed earlier, reserve order can be used to hide the real size of an order. The idea here is to avoid spooking other traders by displaying a huge order. You can see reserve order easily when there is a displayed size for hundreds of shares that will not disappear despite thousands of shares trading at this price. This could be done using both, real market participant identification (MPID), like GSCO or MLCO, and ECN, like ARCA or ISLD. When you see this happening, you have no sure way of knowing the size of the real order (see Fig 13).
On Fig 13 you can see a seller at $5.44 showing just 100 shares. He has a reserve order hidden behind those 100 shares at the offer price. Prints scroll on Times & Sales, yet the price stays the same.
Sometimes an indication of a reserve nearing exhaustion is a big print on the opposite side of the spread. If you see many shares filled at $20 in a string of buys while a single seller is holding the stock by his offer, and then the print for big block appears at, say, $19.90, this often leads to a âlidâ being lifted â the seller leaves a $20 offer allowing a stock to move higher. This big block is not a necessary requirement for a seller to go away â itâs just one of the patterns that could be used for a quick scalp.
2. Using big order size for intimidation
We call these types of orders NITBB or NITSO (No Intention to Buy Bid or No Intention to Sell Offer). When using this technique, the market participant displays a huge size greatly exceeding all others seen on Level 2. Most often itâs done in order to provoke traders to move in the opposite direction, as they are trying to undercut this big size or to get in or out âfront runningâ this size.
Letâs describe this scenario the following way:
If some player wants to accumulate shares at $19.90 while the market is at $19.98 x 20, he can try and display a huge size at $20.02, spooking traders into selling. Meanwhile our player places a bid for small shares at $19.90 with a reserve order for the amount of shares he needs, thus absorbing the selling. When he is done buying, he cancels his sell order. Of course this technique could now be used to propel the stock up. If a quick profit was the original intention of our player, he can do just that by selling his accumulated shares at a higher price. More often, this technique is used simply to accumulate shares when building big position. Needless to say, this can be done only on thinly traded issues â an attempt to do something like this on MSFT will be doomed. This also carries a certain risk â there could be someone attracted by big size to initiate or liquidate his position, and if that happens, our player will be stuck with big position against his original intention.
A trader can try and use this situation for a scalp in the opposite direction, buying when the accumulation is done and big intimidating size disappears.
A variation of this technique would be to drive a stock to a certain price level by following it with a bid or an offer which stays slightly away from the inside market and chases it as a price moves. If a stock trades at $19.98 x 20 and our player wants it at, say $20.20 to start unloading his position or for whatever reason, he displays big size at $19.93 for instance, and trails it higher as a stock moves higher but stays behind the best bid all the time.
In both cases such a âfakeâ order is usually easy to spot given two signs. Firstly, such an order most often stays slightly away from the inside market. Secondly, if some trades are executed against this order, it usually disappears immediately.