Quote from Gamer:
Can anybody suggest any good, up-to-date training material on level 2? In particular, any recommendation on professional day traders who uses NASDAQ L2 who also coach and mentor?
I have rudimentary knowledge of L2 and would like to learn from a pro. I understand the basics but there are many unanswered questions.
For example:
1. Why would a market maker ever use their own name to post an order? Why can't they place all their orders with the ECNs?
2. Are large orders on ECNs always fake? Can you tell which one is a fake?
3. If the axe is on the best bid and the stock is slowly going up, how can you tell the axe is also not selling through an ECN?
And so on and so forth...
Well I'm not a coach or mentor but I can give you a few tidbits that might help.
1)Although I don't know the answer for sure, I'm guessing Market Markers post under their own name so they don't have to wait in line on the ECNs. I notice MM will get hit a lot sometimes even when no ECNs are being hit.
2) Large orders are not always fake. However it also depends on what you mean by a "large order". I've only traded up to 25K but people I work with will sometimes trade up to 100K and it's completely real. One way to see if one is fake is to watch if there's someone "pushing the stock around" by putting a massive order on an obscure ECN. For example: size on a stock is 2000x2000. All of a sudden someone jumps on BTRD or SIZE with 300K. Computers or other participants see this and get scared. Person pushes it until the market no longer responds, flattens his position, and trys pushing it back the other way. Quite annoying but I see it happen all the time.
One more thing to watch for regarding fake orders is what happens when someone crosses/locks the market. Does the size suddenly drop or does it stay relatively the same? If it drops and then comes back when the market is no longer crossed/locked then it's probably computers with fake size.
Steve is right. Learning level 2 takes many hours of screen time and what everyone sees is slightly different.