Trader Alan and the rest,
I know you folks are experienced tape readers, and some of you are inclined towards research. Can you please help with the following? This would be much appreciated.
On each stock X, there is a list of trades taking place in time, and then there is a quote (bxa). This is followed by a list of trades and then another quote, repeatedly.
(a) Is a quote listed before the trades that trigger it are listed? I have some research material which suggests this (from about 1992). It is unclear how much technology has changed things.
(b) if you have to classify a particular trade (say if you were scanning the tape at end-of say) as a buy or sell, how would you go about it?
I can be more detailed if required; but am not sure if someone here has thought about such things or already knows, or even gives a damn. :)
The question is very simple, but the answer is not --- to me at least. Either a trade can be classified as a buy or sell (as you watch it in time), or not. If you believe it can, even probabilistically, what rule will you use?
I have some ideas, but there is no substitute for experience. That is why I ask.
Thanks much,
Joseph |
