Quote from NY0BScalper:
It says that we can see depth of specialist and floor orders, but we cannot identify them as such - they are mixed in. However, the NYSE open book non-ultra shouldn't have those orders, so by comparing the two books one should be able to tell if the order is floor or not... unless I'm missing something.
Quote from bespoke:
Can't you already compare the NYSE in the L2 with the normal NYOB to see floor orders?
Quote from NY0BScalper:
Of course, but this ultrabook supposedly shows us depth. The NYSE in the LII only shows you the floor man if he's the best nyse bid or offer. From the way I interpreted the link, this may now be possible with depth of market, but only by comparing ultraopenbook to normal nyob, because the ultrabook apparently merges customer and floor orders without specifying what's what.
I need to get my eyes on this data...
That would indeed be very cool.Quote from NY0BScalper:
I wonder how the data lag will be with this. NYOB is always behind the NYSE quote, at least with Laser and Sterling, by about half a second to a second. Let's see if this ULTRA can stay as fast as the other ECN books.